From the sum of `(9a^2 b - 3ab + 10) and (-4a^2 b - ab - 4)`, subtract `(6ab + 15)` .

What is the HCF of a^2b^4+2a^2b^2 and (ab)^7 - 4a^2b^9

what must be subtracted from 3a^(2) - 6ab - 3b^(2) - 1 to get 4a^(2) - 7ab - 4b^(2) + 1 ?

Find the sum of the expressions - 3a ^(2) + 2 ab - 4b^(2) and - 6a ^(2) + 4b.

Find the sum of the expresson - 15 a ^(2) + 3 ab - 6b ^(2) a ^(2) - 5 ab + 11 b ^(2) , - 7a ^(2)- 18 ab - 13 b ^(2) and 26 a ^(2) - 16 ab - 7b ^(2).

Subtract (2a - 3b + 4c) from the sum of (a + 3b - 4c), (4a - b +9c) and (-2b + 3c -a )

Subtract the sum of 2a+3b,a-2b+c,-a+2c and 4a+2b-5 from 6a-4b+8

Find the product of 3ab^(2)and (4ab+3b^(2))