How do you solve $5 x^{2} = 45$ $5x^2=45$ ?

Nov 6, 2015

$x = 3$ $x=3$

$5 x^{2} = 45$ $5x^2=45$
$x^{2} = \frac{45}{5} = 9$ $x^2=45/5=9$
$\sqrt{x^{2}} = \sqrt{9}$ $sqrt(x^2)=sqrt9$
$x = 3$ $x=3$

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How do you solve 5x2=455x^2=45?