Question

2. (x-2)+5. (2-x)+6. (x+1)=0

Answer 1

2.(x - 2) + 5.(2 - x) + 6.(x + 1) = 0

Aplicando a distributiva:

2.x - 2.2 + 5.2 - 5.x + 6.x + 6.1 = 0

2x - 4 + 10 - 5x + 6x + 6 = 0

2x - 5x + 6x - 4 + 10 + 6 = 0

3x + 12 = 0

3x = -12

x = -12/3

x = -4