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Nonlinear Equations in One Variable and Systems of Equations

SAT Math· difficulty 3/5

Simplify: 18x2\sqrt{18x^2} for x≥0x \geq 0.

  • A

    32x3\sqrt{2x}

  • B

    3x23x\sqrt{2}

    check_circle
  • C

    9x29x\sqrt{2}

  • D

    2x32x\sqrt{3}

Explanation

18x2=9⋅2⋅x2=3x2\sqrt{18x^2} = \sqrt{9 \cdot 2 \cdot x^2} = 3x\sqrt{2}.

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