How do you solve $x^{2} = 72$ $x^2 = 72$ ?

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How do you solve $x^{2} = 72$ $x^2 = 72$ ?

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Answer 1 · 2018-05-08T19:40:12

$x = \pm 6 \sqrt{2}$ $x=+-6sqrt2$

Explanation:

$take the square root of both sides$ $color(blue)"take the square root of both sides"$

$\sqrt{x^{2}} = \pm \sqrt{72} \leftarrow note plus or minus$ $sqrt(x^2)=+-sqrt72larrcolor(blue)"note plus or minus"$

$\Rightarrow x = \pm \sqrt{72} = \pm \sqrt{36 \times 2} = \pm 6 \sqrt{2}$ $rArrx=+-sqrt72=+-sqrt(36xx2)=+-6sqrt2$

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How do you solve $x^{2} = 72$ $x^2 = 72$ ?

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How do you solve $x^{2} = 72$ $x^2 = 72$ ?