Question

x(x + 4) + x(x + 2) = 2x + 12 ??​

Answer 1

Resolvendo essa equacao.......

X(X + 4) + X(X + 2) = 2X + 12

X² + 4X + X² + 2X = 2X + 12

2X² + 4X - 12 = 0     (÷2)

X² + 2X - 6 = 0

Δ = b² - 4.a.c

Δ = 28

Logo

X  = (-b ± √Δ)/2.a

X' = - 2 + √28

X'' = -2 - √28

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