Question

6 = x² - 7x + 6

como faz ?

Answer 1

6=x^2-7x+6
x^2-7x+6-6
x^2-7x-0=0
delta = b^2-4.a.c
delta = (-7)^2-4.1.(-0)
delta =49+0
delta=49
x=-b-/+ raiz de delta / 2a
x=-(-7)-7/2.1
x=7-7/2
x=0/2
x=0
x=-(-7)+7/2.1
x=7+7/2
x=14/2
x=7.