Nonlinear Functions

SAT Math· difficulty 5/5

A polynomial f(x)f(x) has degree 4, leading coefficient 1-1, and zeros at x=2x = -2 (multiplicity 2) and x=3x = 3 (multiplicity 2). What is the y-intercept?

  • A

    3636

  • B

    12-12

  • C

    1212

  • D

    36-36

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Explanation

f(x)=(x+2)2(x3)2f(x) = -(x+2)^2 (x-3)^2. Then f(0)=(2)2(3)2=(4)(9)=36f(0) = -(2)^2(-3)^2 = -(4)(9) = -36.

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