Question

Alguem sabe fazer essa conta ????
X²-9x-22=0

Answer 1

x^2-9x-22=0
delta=b^2-4.a.c
delta=(-9)^2-4.1.(-22)
delta=81+88
delta=169
x=-b-/+ raiz de delta/2a
x=-(-9)-13/2.1
x=9-13/2
x=-4/2
x=-2
x=-(-9)+13/2.1
x=9+13/2
x=22/2
x=11