Ответ:
x² +5x + 6 = 0;
x²+3x+2x+6=0;
x (x + 3) + 2 (x + 3) = 0;
(x + 3) (x + 2) =0;
x+3=0;
x + 2 = 0;
x= -3;
x= -2;
Ответ: x₁= -3; x₂= -2.
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Ответ:
x² +5x + 6 = 0;
x²+3x+2x+6=0;
x (x + 3) + 2 (x + 3) = 0;
(x + 3) (x + 2) =0;
x+3=0;
x + 2 = 0;
x= -3;
x= -2;
Ответ: x₁= -3; x₂= -2.