How do you solve $4 a^{2} - 144 = 0$ $4a^2-144=0$ ?

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Answer 1 · 2016-03-26T14:33:49

$a = - 6, 6$ $a=-6,6$

Add $144$ $144$ to both sides of the equation.

$4 a^{2} = 144$ $4a^2=144$

Divide both sides of the equation by $4$ $4$ .

$a^{2} = 36$ $a^2=36$

Take the square root of both sides. Recall that both the positive and negative roots should be taken.

$a = \pm \sqrt{36} = \pm 6$ $a=pmsqrt36=pm6$

How do you solve 4a^2-144=04a2−144=04a^2-144=0?