Question

Ex 3 va rog dau cororana!​

Answer 1

Ridici ecuatia la puterea a 2-a ca sa scapi de radical

x²+x+2 = (x²+x)²

x²+x+2 = x⁴+2x³+x²

x⁴+2x³-x-2 = 0

x³(x+2)-(x+2) = 0

(x+2)(x³-1) = 0

x+2 = 0 => x = -2

x³-1 = 0 => x³ = 1 => x = 1