Question

SOLVE EQUATION BY TAKING SQUARE ROOTS. -100+81a^2=0

Answer 1

GOOD MORNING AND CONGRATULATIONS ON YOU GRADUATING :D

Answer 2

Answer:

a = ±10/9

Step-by-step explanation:

$-100+81a^2=0\\81a^2=100\\a^2=\frac{100}{81}\\\sqrt{a^2}=\sqrt{\frac{100}{81} }\\a=10/9\\a=-10/9$