Question

x^2+6X+5=0 решите уравнение

Answer 1

X^2 + 6X + 5 = 0
D = 36 - 20 = 16 ; √ 16 = 4 
X1 = ( - 6 + 4 ) : 2 = - 1 
X2 = ( - 6 - 4 ) : 2 = - 5 
ОТВЕТ ( - 1 ) ; ( - 5 )

Answer 2

тормо3

Answer 3

$(x + 3) ^ 2 - 4 = x^2 + 6x + 5 \ (x + 3)^2 = 4 \ x + 3 = pm 2 \ x = -3 pm 2 \ x_1 = -5, x_2 = -1$