Respuesta :

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5a² - 44 = 81

Add 44 to both sides of the equation.

5a² = 81 + 44

Simplify.

5a² = 125

Divide both sides by 5, so that we get a² isolated.

a² = 125/5

Simplify.

a² = 25

a = √25

So, a = 5 AND a = -5

It could be both because remember, 5 × 5 = 25, and -5 × -5 = 25, therefore making the statement true. 

~Hope I helped!~

[tex]5a^{2} -44=81\\5a^{2} -44+44=81+44\\5a^{2} =125\\\frac{5a^{2} }{5} = \frac{125}{5} \\a^{2} =25\sqrt{a^{2} } = \sqrt{25} \\a=5\\{5,-5}[/tex]

Hope this helps!!!

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