Question

Qual a raiz de -2x2+10=0

Answer 1

$-2x^2+10=0 \\ \\ -2x^2=-10 \\ \\ x^2=\frac{-10}{-2} \\ \\ x^2=5 \\ \\ \boxed{x=+-\sqrt5}$

Answer 2

-2x² + 10 = 0
-2x² = -10
x² = -10 = 5
      -2
x²= +- $\sqrt{5}$