Question

achar o valor de x2:

x2-3/10 =-3

Answer 1

$x^{2} - \frac{3}{10} =-3 \\ \\ \frac{10 x^{2} -3}{10} =-3 \\ \\ 10 x^{2}-3 =(-3).10 \\ \\ 10 x^{2} =-30+3 \\ \\ x^{2} =- \frac{27}{10}$