Question

(x-3)(x+4)-14=(1-x)(x-2)​

Answer 1

Resposta:

2x²-2x+10 = 0

Explicação passo-a-passo:

x.x = x²

x.4 = 4x

(-3).x = -3x

(-3).4 = -12

x²+4x-3x-12=

1.x = x

1.(-2) = -2

(-x).x = -x²

(-x).(-2) = 2x

x²+4x-3x-12 = x-2-x²+2x

4x-3x = x

x+2x = 3x

x²+x-12 = -x²+3x-2

x²+x-12+x²-3x+2 = 0

x²+x² = 2x²

x-3x = -2x

-12+2 = 10

2x²-2x+10 = 0