Question

4x au quadrado - 36 =0

Answer 1

4x² - 36 = 0
4x² = 36
x² = 36/4
x = $\sqrt{9}$
x = 3

Answer 2

4x^2-36=0
4x^2=36
x^2=36/4
x^2=V9
x=+/-9
x=+/-3