Question

Resolve as equações de 2° grau:

me ajuda aí por favor



a) (x – 1)(x – 2) – 12 = 0

b) (x + 1)2 = 1 – 3x

c) x2 – 3 =

d) (x + 5)(x – 5) = 8x – 41

e) (x + 4)(x – 3) – 14 = (1 – x)(x – 2)

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Answer 1

Resposta:

a) (x - 1).(x -2) - 12 = 0

x^2 -2x -x +2 - 12 = 0

x^2 -3x -10 = 0

a = 1 b = -3 c = -10