Question

x^2+ x-7= 5.qual e o resultado dessa conta ?pfv

Answer 1

x^2+x-7=5
x^2+x-7-5
x^2+x-12=0
delta=b^2-4ac
delta=1^2-4.1.(-12)
delta=1+48
delta=49
x=-b-/+ raiz de delta/2a
x=-1-7/2.1
x=-8/2
x=-4
x=-1+7/2.1
x=6/2
x=3