Question

subtract the sum of 2a²+5ab-b² and ab+2b²from a²+4ab+b²

​

Answer 1

Answer:

-2a2

Step-by-step explanation:

sum is equal to

2a2+5ab-b2

-3a2-ab +2b2

=-a2+4ab+b2

Now subtraction

-a2+4ab+b2

-(a2+4ab+b2)

=-a2+4ab+b2-a2-4ab-b2

=-2a2

Answer 2

Answer:

2a²+5ab-b²+ab+2b²=2a²+6ab+b²

a²+4ab+b²-(2a²+6ab+b²)

a²+4ab+b²-2a²-6ab-b²

-a²-2ab

-a(a+2b) is the final answer