Question

(X+1)=7+X Como resolver na fórmula de bhaskara

Answer 1

(x+1)-7-x=0
-7x-x2-7-x=0
-8x-x2-7=0
delta=64-4.(-1).(-7)
delta=64-28
delta=36
x=8+ou- raiz de 36 /2
x=8+ou- 6 /2
x'=8+6/2
x'=14/2
x'=7

x"=8-6/2
x"=2/2
x"=1