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Nonlinear Equations in One Variable and Systems of Equations

SAT Math· difficulty 3/5

Solve x2+2x−15=0x^2 + 2x - 15 = 0.

  • A

    x=−3,5x = -3, 5

  • B

    x=−5,−3x = -5, -3

  • C

    x=3,−5x = 3, -5

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  • D

    x=5,3x = 5, 3

Explanation

(x−3)(x+5)=0(x-3)(x+5) = 0, so x=3x = 3 or x=−5x = -5.

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