Respuesta :
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!~
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!!!