Gr12 Mathematics: Ch 5.8 Cubic Polynomials
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Questions and Answers

What is the formula for performing long division of polynomials?

  • a(x) = b(x) × Q(x) - R(x)
  • a(x) = b(x) × R(x) + Q(x)
  • a(x) = b(x) × Q(x) + R(x) (correct)
  • a(x) = b(x) × R(x) - Q(x)
  • What is the first step in performing synthetic division?

  • Use the opposite sign of the root of the dividend polynomial.
  • Write the coefficients of the divisor polynomial.
  • Use the opposite sign of the root of the divisor polynomial.
  • Write the coefficients of the dividend polynomial. (correct)
  • What is the equation of the y-intercept of a cubic polynomial?

  • y = f(0) = b
  • y = f(x) = d (correct)
  • y = f(0) = a
  • y = f(0) = c
  • What is the purpose of finding the stationary points of a cubic polynomial?

    <p>To identify the turning points of the graph</p> Signup and view all the answers

    What is the first step in solving a cubic equation using the Factor and Remainder Theorem?

    <p>Find the value of k such that f(k) = 0</p> Signup and view all the answers

    What is the general formula for synthetic division?

    <p>All of the above</p> Signup and view all the answers

    What is the purpose of analyzing the end behavior of a cubic polynomial?

    <p>To analyze the behavior of the graph as x approaches positive and negative infinity</p> Signup and view all the answers

    What is the formula for the quotient Q(x) in polynomial division?

    <p>a(x) / b(x) + R(x)</p> Signup and view all the answers

    What is the purpose of finding the x-intercepts of a cubic polynomial?

    <p>To find the roots of the polynomial equation</p> Signup and view all the answers

    What is the difference between long division and synthetic division of polynomials?

    <p>Long division is a general method, while synthetic division is a shortcut method</p> Signup and view all the answers

    What is the first step in drawing the graph of a cubic polynomial?

    <p>Find the y-intercept</p> Signup and view all the answers

    What is the relationship between the roots of a polynomial equation and its factors?

    <p>The roots correspond to the factors</p> Signup and view all the answers

    What is the purpose of analyzing the end behavior of a cubic polynomial?

    <p>To determine the shape of the graph</p> Signup and view all the answers

    What is the general form of a cubic polynomial?

    <p>ax^3 + bx^2 + cx + d</p> Signup and view all the answers

    What is the second step in solving a cubic equation using the Factor and Remainder Theorem?

    <p>Divide the polynomial by the factor x - k</p> Signup and view all the answers

    What is the purpose of finding the stationary points of a cubic polynomial?

    <p>To determine the shape of the graph</p> Signup and view all the answers

    What is the remainder when the polynomial a(x) is divided by b(x)?

    <p>R(x)</p> Signup and view all the answers

    What is the main difference between long division and synthetic division of polynomials?

    <p>Synthetic division is a shorthand method of long division</p> Signup and view all the answers

    What is the purpose of finding the stationary points of a cubic polynomial?

    <p>To determine the turning points of the graph</p> Signup and view all the answers

    When dividing a polynomial a(x) by a linear divisor x - k, what is the value of the remainder?

    <p>a(k)</p> Signup and view all the answers

    What is the relationship between the roots of a polynomial equation and its factors?

    <p>The roots of the equation are the zeros of the factors of the polynomial</p> Signup and view all the answers

    When drawing the graph of a cubic polynomial, what is the purpose of identifying the end behavior?

    <p>To identify the direction of the graph as x approaches infinity</p> Signup and view all the answers

    What is the purpose of using the Factor and Remainder Theorem to solve cubic equations?

    <p>To find the roots of the equation</p> Signup and view all the answers

    When performing synthetic division, what is the role of the opposite sign of the root of the divisor polynomial?

    <p>It is used to perform the synthetic division process</p> Signup and view all the answers

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