Fundamental Theorem of Algebra Practice
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Questions and Answers

Find all the roots of the equation $X^3 + x^2 + 4x + 4 = 0$.

-1, +2i

Find all the roots of the equation $X^3 + 4x^2 + x - 6 = 0$.

-3, -2, 1

What are the roots of the function?

2, +√3

What are the roots of the function?

<p>+2, +√2</p> Signup and view all the answers

What are the roots of the function?

<p>-6, +i</p> Signup and view all the answers

What are the roots of the function?

<p>-2, 3+i√2</p> Signup and view all the answers

What are the roots of the function?

<p>-2, 3, +i</p> Signup and view all the answers

Find all the roots of the equation $X^3+x^2+4x+4=0$.

<p>-1, +2i</p> Signup and view all the answers

Find the roots of the equation $X^3+4x^2+x-6=0$.

<p>-3, -2, 1</p> Signup and view all the answers

Find the roots of a polynomial that satisfies the conditions provided in the definition.

<p>2, +√3</p> Signup and view all the answers

Find the roots of a polynomial that satisfies the conditions provided in the definition.

<p>+2, +√2</p> Signup and view all the answers

Find the roots of a polynomial that satisfies the conditions provided in the definition.

<p>-6, +i</p> Signup and view all the answers

Find the roots of a polynomial that satisfies the conditions provided in the definition.

<p>-2, 3+i√2</p> Signup and view all the answers

Find the roots of a polynomial that satisfies the conditions provided in the definition.

<p>-2, 3, +i</p> Signup and view all the answers

Determine whether the following statement is always, sometimes, or never true: A polynomial function with real coefficients has real zeros.

<p>Sometimes true</p> Signup and view all the answers

Determine whether the following statement is always, sometimes, or never true: A polynomial function that does not intercept the X-axis has complex roots only.

<p>Always true</p> Signup and view all the answers

Determine whether the following statement is always, sometimes, or never true: An odd degree polynomial function with real coefficients has at least one real root.

<p>Always true</p> Signup and view all the answers

Study Notes

Roots of Polynomial Equations

  • The equation ( X^3 + X^2 + 4X + 4 = 0 ) has roots at -1 and ( +2i ).
  • The equation ( X^3 + 4X^2 + X - 6 = 0 ) has roots at -3, -2, and 1.
  • A third example yields roots at 2 and ( +\sqrt{3} ).
  • An additional equation has roots at ( +2 ) and ( +\sqrt{2} ).
  • The equation with roots at -6 and ( +i ).
  • Another polynomial has roots at -2 and ( 3 + i\sqrt{2} ).
  • Another polynomial found roots at -2, 3, and ( +i ).

Statements About Polynomial Functions

  • A polynomial function with real coefficients has real zeros sometimes.
  • A polynomial function that does not intercept the x-axis always has complex roots only.
  • All polynomial functions of degree greater than zero with real coefficients always have at least one real root.

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Test your understanding of the Fundamental Theorem of Algebra with these practice flashcards. Solve various polynomial equations and find their roots without using a calculator. This quiz will help reinforce your skills in identifying complex and real roots.

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