Question

How much 12a2 – 9ab is larger than 16a2 – 3b2 + 7ab?​

Answer 1

Answer:

-4a2-16ab+3b2

Step-by-step explanation:

So, we want to know by how much the first expression is larger than the second. Therefore, we need to subtract the expressions. Like this,

    12a2 - 9ab

- 16a2   - 7ab + 3b2 is equal to :-

-4a2    -  16ab  +3b2

The signs change for the second expressions when subtracting using this formula :-

minus into minus is plus

plus into plus is plus

minus into plus is minus

plus into minus is minus

Hope this helps you.