Question

Add the following:
1. mn, - mn, mn², - 3mn³
2. 3b,- 2b, 2b, - b
3. 2m, 3m, - 4m, 5m and also give the steps.​

Answer 1

Answer:

1.mn+(-mn)+mn²+(-3mn)³

=3mn-mn+mn²-9m³n³

=2mn+mn²-9m³n³

=-9m³n³+mn²+2mn

2. 3b+(-2b)+2b+(-b)

=3b-2b+2b-b

=3b-b

=2b

3.2m+3m+(-4m)+5m

=5m-4m+5m

=m+5m

=6m