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Nonlinear Equations in One Variable and Systems of Equations

SAT Math· difficulty 2/5

Solve x2+7x+12=0x^2 + 7x + 12 = 0.

  • A

    x=3,4x = 3, 4

  • B

    x=−3,−4x = -3, -4

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  • C

    x=2,6x = 2, 6

  • D

    x=−2,−6x = -2, -6

Explanation

Factor: (x+3)(x+4)=0(x+3)(x+4) = 0, so x=−3x = -3 or x=−4x = -4.

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