Question

3x² - 18 = 0 sem utilizar a fórmula de bhaskara

Answer 1

3x²-18=0
3x²= 18
x²= 18/3
x²= 6
x= √6

Answer 2

$3 {x}^{2} \: - 18 = 0 \\ 3 {x}^{2} = 0 + 18 \\ 3 {x}^{2} = 18 \\ {x}^{2} = 18 \div 3 \\ {x}^{2} = 6 \\ x = \sqrt{6}$