Question

alguem me responde x(x+3)-40=0

Answer 1

As raízes da equação são 5 e -8. Sendo delta, 169.

Answer 2

x(x+3)-40=0
x^2+3x-40=0
delta=b^2-4ac
delta=3^2-4.1.(-40)
delta=9+160
delta=169
x=-b-/+ raiz de delta/2a
x=-3-13/2.1
x=-16/2
x=-8
x=-3+13/2.1
x=10/2
x=5