Question

$3x^{2}$=12
$2x^{2}$-72=0

Answer 1

Răspuns:

$3 {x}^{2} = 12 \\ {x}^{2} = 4 \\ x1 = 2 \: si \: x2 = - 2$

$2 {x}^{2} = 72 \\ {x}^{2} = 36 \\ x1 = 6 \: si \: x2 = - 6$