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Nonlinear Equations in One Variable and Systems of Equations

SAT Math· difficulty 3/5

Solve x2+5x=14x^2 + 5x = 14.

  • A

    x=−2,7x = -2, 7

  • B

    x=2,7x = 2, 7

  • C

    x=2,−7x = 2, -7

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  • D

    x=−2,−7x = -2, -7

Explanation

x2+5x−14=0x^2 + 5x - 14 = 0, (x+7)(x−2)=0(x+7)(x-2) = 0, x=2x = 2 or x=−7x = -7.

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