Question

por favor resolva esta conta para mim

a) x^2-9=27

Answer 1

x²-9 = 27
x² = 27+9
x²= 36
x = √36
x= √2² * 3³ 
x= 2*3
x= 6

36/2
18/2
9/3
3/3
1 .. 

Answer 2

$x^{2} - 9 = 27; x^{2} = 27 + 9; x^{2} = 36$; X = +/- $\sqrt{36}$ = +/- 6