Question

Quando é 2x^2-99=0 ?

Answer 1

2x² - 99 = 0
2x² = 99
x² = ⁹⁹/₂
$\mathsf{ x = \pm \sqrt{ \frac{99}{2} } } \\ \\ \mathsf{x = \pm 3 \sqrt{ \frac{11}{2} } }$