Question

subtract the sum of 3a2b+5ab +4 and 7a2b+6ab-9 from the sum of4a2b -8ab -5and 5a2b+3ab-8​

Answer 1

Answer:

-a²b - 16ab - 8

Step-by-step explanation:

Sum of 3a²b + 5ab + 4 and 7a²b + 6ab - 9 is:

=> 3a²b + 7a²b + 5ab + 6ab + 4 - 9

=> 10a²b + 11ab - 5

Sum of 4a²b - 8ab - 5 and 5a²b + 3ab - 8

=> 4a²b + 5a²b - 8ab + 3ab - 5 - 8

=> ​9a²b - 5ab - 13

Acc. to ques, we have to subtract the sum of 3a²b + 5ab + 4 and 7a²b + 6ab - 9 from the sum of4a²b - 8ab - 5 and 5a²b + 3ab - 8.

=> ​9a²b - 5ab - 13 - (10a²b + 11ab - 5)

=> 9a²b - 5ab - 13 - 10a²b - 11ab + 5

=> -a²b - 16ab - 8