Index Laws, Scientific Notation, Binomial Expansion

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Simplify: 2³ x 2⁴, expressing all answers in positive indices

2⁷

Simplify: e⁴ x e¹³, expressing all answers in positive indices

e¹⁷

Simplify: $\frac{2^7}{2^4}$, expressing all answers in positive indices

Simplify: $\frac{a^{12}}{a^8}$, expressing all answers in positive indices

<p>a⁴</p> Signup and view all the answers

Simplify: (2³)², expressing all answers in positive indices

<p>2⁶</p> Signup and view all the answers

Simplify: (b⁵)⁷, expressing all answers in positive indices

<p>b³⁵</p> Signup and view all the answers

Simplify: (2³ x 3⁴)⁵, expressing all answers in positive indices

<p>2¹⁵ x 3²⁰</p> Signup and view all the answers

Simplify: (a⁴b³c⁵)⁷, expressing all answers in positive indices

<p>a²⁸b²¹c³⁵</p> Signup and view all the answers

Simplify: $(\frac{a^2}{3^3})^5$, expressing all answers in positive indices

<p>$\frac{a^{10}}{3^{15}}$</p> Signup and view all the answers

Simplify: $(\frac{a^2b^5}{c^6})^3$, expressing all answers in positive indices

<p>$\frac{a^6b^{15}}{c^{18}}$</p> Signup and view all the answers

Simplify: b⁰, expressing all answers in positive indices

<p>1</p> Signup and view all the answers

Simplify: $\frac{(2a^3)^3}{a^9}$, expressing all answers in positive indices

<p>8</p> Signup and view all the answers

Simplify: $\frac{2b^{-3}}{b^{-5}}$, expressing all answers in positive indices

<p>2b²</p> Signup and view all the answers

Simplify: $\frac{(a^3c^7)^3a^{-2}}{(a^2b^5)^2}$, expressing all answers in positive indices

<p>$\frac{a^5c^{21}}{b^{10}}$</p> Signup and view all the answers

Simplify: $\frac{(3a^3b^2)^{-2}}{(2a^2b^3)^3}$, expressing all answers in positive indices

<p>$\frac{1}{72a^{12}b^{13}}$</p> Signup and view all the answers

Simplify: $(\frac{(a^4b^2)^3}{b^{-4}c^2})^3$

<p>$\frac{a^{36}b^{30}}{c^6}$</p> Signup and view all the answers

Complete the table: Decimal Notation 87 300 000

<p>8.73 x 10⁷</p> Signup and view all the answers

Complete the table: Decimal Notation 0.000 000 2301

<p>2.301 x 10⁻⁷</p> Signup and view all the answers

Complete the table: Scientific Notation 8.01 x 10⁵

<p>801 000</p> Signup and view all the answers

Complete the table: 9.21 x 10⁻⁵

<p>0.0000921</p> Signup and view all the answers

Expand: 2(x + 4)

<p>2x + 8</p> Signup and view all the answers

Expand: 4(x + 3) – 3(x + 4)

<p>x</p> Signup and view all the answers

Expand: -3(x - 4) – 2(x − 3)

<p>-5x + 18</p> Signup and view all the answers

Expand: (x + 4)(x + 3)

<p>x² + 7x + 12</p> Signup and view all the answers

Expand: (3y + 2)(y – 2)

<p>3y² - 4y - 4</p> Signup and view all the answers

Expand and simplify: (x + 4)²

<p>x² + 8x + 16</p> Signup and view all the answers

Expand and simplify: (x + 3)(x - 3)

<p>x² - 9</p> Signup and view all the answers

Expand and simplify: (3x + 8)(3x – 8)

<p>9x² - 64</p> Signup and view all the answers

Factorise the following: 6x + 48

<p>6(x + 8)</p> Signup and view all the answers

Factorise the following: 5x³ – 55x

<p>5x(x² - 11)</p> Signup and view all the answers

Factorise the following: 6x³ + 24x²

<p>6x²(x + 4)</p> Signup and view all the answers

Factorise the following: -10x² + 45x

<p>5x(-2x + 9)</p> Signup and view all the answers

Factorise the following: -6x⁴ – 46x²

<p>-2x²(3x² + 23)</p> Signup and view all the answers

Factorise the following: 2x(x - 7) + 3(x - 7)

<p>(2x + 3)(x - 7)</p> Signup and view all the answers

Factorise the following: 3x(x – 1) – 4(x – 1)

<p>(3x - 4)(x - 1)</p> Signup and view all the answers

Rearrange to make y the subject: a = y + b

<p>y = a - b</p> Signup and view all the answers

Rearrange to make y the subject: a = √(cdy + b)

<p>y = (a² - b) / (cd)</p> Signup and view all the answers

Flashcards

Product of Powers Rule

When multiplying powers with the same base, add the exponents. x^m * x^n = x^(m+n)

Power of a Power Rule

When raising a power to a power, multiply the exponents. (x^m)^n = x^(m*n)

Quotient of Powers Rule

When dividing powers with the same base, subtract the exponents. x^m / x^n = x^(m-n)

Zero exponent

Any non-zero number raised to the power of 0 is 1. x^0 = 1 (where x ≠ 0)

Signup and view all the flashcards

Distributive Property

Multiply the term outside the parentheses by each term inside the parentheses.

Signup and view all the flashcards

FOIL Method

FOIL stands for First, Outer, Inner, Last. It is a method for multiplying two binomials.

Signup and view all the flashcards

Factorising

Finding the factors that multiply together to create a given expression.

Signup and view all the flashcards

Study Notes

  • Revision topics are based on traffic light Exercise 3.1 – 3.7
  • Try all the questions, highlight in the traffic light to show competency, ask for help if marked red, and for further practice refer to the textbook and choose one easy and one difficult question to challenge yourself.

Index Laws (3.1 & 3.2)

  • Simplify expressions expressing all answers in positive indices:
  • Examples include: 2³ x 2⁴, a³ x a⁸, e⁴ x e¹³, 2⁷/2⁴, a¹²/a⁸, a¹⁰/a⁷, (2³)², (a³)^5, (b⁵)⁷ ,(2³ x 3⁴)⁵, (a³b⁵)², (a⁴b³c⁵)⁷, (a/3b)⁵, (a²b/b⁵)³, (a²b⁵c/c⁶)⁵, b⁰, a⁵c⁴/a⁵, (2a³)³/a⁹, b⁻⁵, a⁴/a³, 2b⁻³/b⁻⁵, (a³c⁷)³a⁻²/(a²b⁵)², (3a³b²)⁻²/(2a²b³)³, ((a⁴b⁵c²)³)/(b⁻⁴c²)

Scientific Notation (3.3)

  • Convert between decimal notation and scientific notation
  • Determine the rank from smallest to largest
  • Examples include: 87 300 000, 0.000 000 2301, 8.01 x 10⁵, 9.21 x 10⁻⁵

Binomial Expansion (3.5)

  • Expand the following expressions:

  • Examples include: 2(x + 4), 2(x – 5), -3(x + 5), 4(x + 3) – 3(x + 4), 3(x – 5) – 2(x + 5), 4(x + 3) – 3(x – 5), -3(x – 4) – 2(x – 3), (x + 4)(x + 3), (x + 5)(x – 2), (3y + 2)(y – 2), (2y – 3)(3y – 7)

  • A square garden with side length of x is to be enlarged where length is increased by 4 metres and width by 1 metre.

  • Draw a diagram of the new garden

  • State the equation that gives the area of the new garden, in its expanded and simplified form.

  • A garden bed has a width of 8 metres and length of 6 metres and is to be enlarged by x in both its length and width.

  • Draw a diagram of the new garden

  • State the equation that gives the area of the new garden in its expanded and simplified form

Expanding Special Brackets (3.6)

  • Expand and simplify
  • Examples include: (x + 4)², (x + 7)², (x – 8)², (x – 5)², (2x + 3)², (3x + 5)², (x + 3)(x – 3), (x – 7)(x + 7), (3x + 8)(3x – 8)

Factorise (3.7)

  • Factorise the following expressions
  • Examples include: 6x + 48, 6x + 21, 12x – 42, 5x³ – 55x, 4x³ – 16x², 6x³ + 24x², -10x² + 45x, -12x³ – 32x, -6x⁴ – 46x², 2x(x – 7) + 3(x – 7), 3x(x – 1) – 4(x – 1), 2x(x + 2) + 7(x + 2)

Rearranging Formula (3.4)

  • Rearrange the following formulas to make y the subject:
  • Examples include: a = y + b, a = y – b, a = y x b, a = by + c, a = by – c, a = y/b + c, a = (y + b)², a = √(y + b), a = √(cdy + b)

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

More Like This

Use Quizgecko on...
Browser
Browser