Question

subtract: (4b-8b+11) -(-2b -4b +5). There is a small 2 above the 4b in the first equation. There is a small 2 above the b in the second equation.

Answer 1

We are asked to solve the following subtraction:

`\mleft(4b^2-8b+11\mright)-\mleft(-2b^2-4b+5\mright)`

First we will change the sign inside the second parenthesis:

`\mleft(4b^2-8b+11\mright)+\mleft(2b^2+4b-5\mright)`

Now we will associate like terms:

`(4b^2+2b^2)+(-8b+4b)+(11-5)`

Now we add the associated terms;:

`6b^2-4b+6`

And thus we get the answer.