Question

x la putere 2 - 4 = 0 un pic de ajutor?

Answer 1

Răspuns:

$x^{2}$-4=0

$x^{2}$=0+4

$x^{2}$=4

x=√4

x=2

Answer 2

X^2 - 4 = 0
X^2 = 4
X^2 = √4
X= 2 sau x= -2