Question

9 x ao quadrado - 36 = 0

Answer 1

9x² - 36 = 0
9x² = 36
x² = 36/9
x² = 4
x = √4
x = +/- 2

R.: x = 2; x = - 2

Answer 2

9x²-36=0
9x²=36
x²=36/9
x=√4
x=+ ou - 2