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Questions and Answers
If one root of the equation x^2 + mx - 5 = 0 is 2, what is the value of m?
If one root of the equation x^2 + mx - 5 = 0 is 2, what is the value of m?
What is the discriminant of the quadratic equation 2y^2 - y + 2 = 0?
What is the discriminant of the quadratic equation 2y^2 - y + 2 = 0?
Which of the following sets of roots can form a quadratic equation?
Which of the following sets of roots can form a quadratic equation?
What is one possible quadratic equation for which the roots are 10 and -10?
What is one possible quadratic equation for which the roots are 10 and -10?
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For which equation do the roots have a sum of 5 and a sum of their cubes equal to 35?
For which equation do the roots have a sum of 5 and a sum of their cubes equal to 35?
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What is the solution to the equation (m - 12)x^2 + 2(m - 12)x + 2 = 0 to have real and equal roots?
What is the solution to the equation (m - 12)x^2 + 2(m - 12)x + 2 = 0 to have real and equal roots?
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If Mukund possesses `50 more than Sagar, what could be a suitable quadratic equation representing their possessions?
If Mukund possesses `50 more than Sagar, what could be a suitable quadratic equation representing their possessions?
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What is the nature of roots for the quadratic equation 3x^2 - 5x + 7 = 0
?
What is the nature of roots for the quadratic equation 3x^2 - 5x + 7 = 0
?
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Which equation has real and equal roots when solved?
Which equation has real and equal roots when solved?
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One of the roots of equation x^2 + mx - 5 = 0 is 2; find m.
Which distractor correctly provides m?
One of the roots of equation x^2 + mx - 5 = 0 is 2; find m.
Which distractor correctly provides m?
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Study Notes
Quadratic Equations
- A quadratic equation is a polynomial equation of degree two, which means the highest power of the variable (x) is two.
- The general form of a quadratic equation is ax^2 + bx + c = 0, where a, b, and c are constants.
Solving Quadratic Equations Using Formula
- The quadratic formula is x = (-b ± √(b^2 - 4ac)) / 2a.
- The formula can be used to solve quadratic equations of the form ax^2 + bx + c = 0.
Nature of Roots of a Quadratic Equation
- The nature of roots of a quadratic equation depends on the value of b^2 - 4ac, which is called the discriminant (∆).
- If ∆ > 0, the roots are real and unequal.
- If ∆ = 0, the roots are real and equal.
- If ∆ < 0, the roots are not real.
Discriminant (∆)
- The discriminant (∆) is b^2 - 4ac.
- It determines the nature of roots of a quadratic equation.
Examples and Practice Exercises
- Various examples and practice exercises are provided to illustrate the concepts of quadratic equations.
- These include solving quadratic equations, finding the value of the discriminant, determining the nature of roots, and more.
Trapezium and Quadratic Equation
- A trapezium is a quadrilateral with two pairs of opposite sides.
- The area of a trapezium can be found using the formula: Area = (sum of parallel sides) * height / 2.
- A quadratic equation can be used to find the length of the parallel sides.
Problem Set
- A set of practice exercises is provided to test understanding of quadratic equations.
- The exercises cover a range of topics, including solving quadratic equations, finding the value of the discriminant, determining the nature of roots, and more.
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Description
Test your knowledge of solving quadratic equations using formulas and flow charts. Practice solving equations with different coefficients and identify the values of a, b, c to find the roots. Includes examples like x² - 7x + 5 = 0 and 2m² = 5m - 5.