Question

Simplifique as expressões
1-(x-2)3-(x+3)3
2-(2x+1)3+(x-2)3
3-(5-2x)3-(5-2x)2

Answer 1

1)  (x - 2)*3 - ( x + 3) * 3
3x - 6 - (3x+9)
3x - 6 - 3x - 9
-15

2) (2x + 1)*3 + (x - 2)*3
6x + 3 + 3x - 6
9x - 3

3) (5 - 2x)*3 - (5 - 2x) * 2
15 - 6x - (10 - 4x)
15 - 6x - 10 + 4x
-2x + 5