Question

x²+5x-2=-8 forma de bascara

Answer 1

Olá, Welder3!

x² + 5x - 2 = -8
x² + 5x - 2 + 8 = 0
x² + 5x + 6 = 0

a = 1
b = 5
c = 6

Δ = b² - 4.a.c
Δ = 5² - 4.1.6
Δ = 25 - 24
Δ = 1

x = -b +- √Δ / 2.a
x = -5 +- √1 / 2.1
x = -5 +- 1 / 2

x' = -5+1/2 = -4/2 = -2
x''' = -5-1/2 = -6/2 = -3

S = {-2, -3}

Answer 2

x²+5x-2+8=0
Δ= 25 -4.1.+6
Δ= 25 -24 
Δ=1

x= -5 -1\ 2 = -3

x= -5 +1 \2 = -2