Question

x-1)² + 3x = 0

3x² - 5x = x . (x-1) - 2

2.(x²+3x) - x +1 = - x²

Answer 1

Resposta:

A) x-1)² + 3x = 0

(x-1)²+3x=0

(x-1).(x-1)+3x=0

x²-x-x+1+3=0

x²+2x+4=0

B) 3x² - 5x = x . (x-1) - 2

3x²-5x=x(x-1)-2

3x²-5x=x²-x-2

C)2.(x²+3x) - x +1 = - x²

2(x²+3x-x+1=-x²

2x²+6x-x+1=-x²

espero ter ajudado! :)