Question

Rezolvati ecuatia x²+x-6=0

Answer 1

x la a doua - 2x + 3x - 6 = 0
x(x-2)+3(x-2)=0
(x-2)(x+3)=0

x-2=0 => x=2
Sau
x+3=0 =>x=-3
S={-3;2}