Question

RESPOSTA DA EQUAÇÃO x² +2x-35=0

Answer 1

$x^2 + 2x - 35 = 0$

Resolvendo por Bháskara:

$x = \dfrac{-b \pm \sqrt{b^2 -4*a*c}}{2*a}$

a=1, b=2, c=−35

Δ=b²−4ac
Δ=(2)²−4*(1)*(−35)
Δ=4+140
Δ=144

$x = \dfrac{-b \pm \sqrt{\triangle}}{2*a}$

$x = \dfrac{-2 \pm \sqrt{144}}{2*1} \\ \\ \\ x = \dfrac{-2 \pm 12}{2} \\ \\ \\ x' = \dfrac{-2 + 12}{2} x' = \dfrac{10}{2} \\ \\ \\ x' = 5 \\ \\ \\ x'' = \dfrac{-2 - 12}{2} \\ \\ \\ x'' = \dfrac{-14}{2} \\ \\ \\ x'' = -7$


S = {5, -7}