Question

Simplify the following

Answer 1

Answer:

1.) -5m + 7n

2.) ab + a²-2b

3.) -2d² + 2d

4.) 10b + 2

Answer 2

Q.1.1

$4m - n + 8n - 9m \\ 4m - 9n - 9m \\ = - 5m - 9n$

Q 1.2

$ab + ( {a}^{2} - 2b)$

this can't be simplified.

Q. 1.3

$4d - d(2d + 2) \\ 3d \times 2d + 2 \\ = 6d + 2$

Q.1.4

$4(b - 2) + 6(b - 1) \\ 4b - 8 + 6b - 6 \\ = 10b - 2$