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Nonlinear Functions

SAT Math· difficulty 5/5

Solve: 2x2=162^{x^2} = 16.

  • A

    x=±4x = \pm 4

  • B

    x=±2x = \pm 2

    check_circle
  • C

    x=2x = 2 only

  • D

    x=−2x = -2 only

Explanation

16=24⇒x2=4⇒x=±216 = 2^4 \Rightarrow x^2 = 4 \Rightarrow x = \pm 2.

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