Question

Solutiile reale ale ecuatiei x^2+7x+6=0 sunt..

Answer 1

x^2+7x+6=0
delta=b^2-4ac
delta=49-4*1*6
delta=49-24
delta=25

x1=-b-radical din delta/2x
x1=-7-5/2
x1=-12/2
x1=-6

x2=-b+radical din delta/2x
x2=-7+5/2
x2=-2/2
x2=-1

Answer 2

x²+x+6x+6=0
x(x+1)+6(x+1)=0
(x+1)(x+6)=0
x+1=0     x+6=0
x=-1        x=-6