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Nonlinear Equations in One Variable and Systems of Equations

SAT Math· difficulty 3/5

Solve (x−3)2=16(x-3)^2 = 16.

  • A

    x=1,−7x = 1, -7

  • B

    x=7x = 7 only

  • C

    x=±4x = \pm 4

  • D

    x=−1,7x = -1, 7

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Explanation

x−3=±4x - 3 = \pm 4, so x=7x = 7 or x=−1x = -1.

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