Question

Simplify the following

1.1) 4m-n+8n-9m
1.2) ab+(a²-2b)
1.3) 4d-d (2d+2)
1.4)4(b-2)+6(b+1)
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Answer 1

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 * 2d + 2 \\ = 6d + 2`

Q.1.4

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