Question

(x-1)*2 + 3x =x+26
equação do 2° grau

Answer 1

(x-1).(x-1)+3x=x+26
x^2-x-x+1+3x-x-26=0
x^2-25=0

Δ=b^2-4.a.c
Δ=0^2-4.1.(-25)
Δ=100

-b+-√Δ/2.a
-0+-√100/2.1
-0+-10/2
x1= -0+10/2= 10/2= 5
x2= -0-10/2= -10/2= -5