Question

Subtract 11b^2 - 4b + 7 from b^2 + 8b - 9 ?

Answer 1

Subtract 11b^2 - 4b + 7 from b^2 + 8b - 9 ?​

That is

`b^2+8b-9-(11b^2-4b+7)=b^2+8b-9-11b^2+4b-7`

Collecting like terms we have

`b^2+8b-9-(11b^2-4b+7)=b^2-11b^2+8b+4b-9-7=-10b^2+12b-16`

Hence the result of the subtraction is

`-10b^2+12b-16`