Question

alguem me ajuda, ײ+2×-8=0

Answer 1

x^2+2x-8=0
delta=b^2-4ac
delta=2^2-4.1.(-8)
delta=4+32
delta=36
x=-b-/+ raiz de delta/2a
x=-2-6/2.1
x=-8/2
x=-4
x=-2+6/2.1
x=4/2
x=2
S={-4, 2}

Answer 2

a resposta total e 4,2