Question

9x² - 1 = 0
Resolvam passo a passo pra mim

Answer 1

9x²=1
x²=1/9
x=√1/√9
x=1/3

Answer 2

9x² - 1 = 0
9x² = 1
x² = 1
      -----
        9
              ____
x = +/-  √1/9

x = 1/3 e x = - 1/3