Question

x2+2x+x+2=0
x(x+2)=2x+25

Answer 1

x^2+2x+x+2=0
x^2+3x+2=0
delta=b^2-4ac
delta=3^2-4.1.2
delta=9-8
delta=1
x=-b-/+ raiz de delta/2a
x=-3-1/2.1
x=-4/2
x=-2
x=-3+1/2.1
x=-2/2
x=-1
x(x+2)=2x+25
x^2+2x=2x+25
x^2+2x-2x=25
x^2=25
x= raiz de 25
x=-/+ 5