An easy grade 11 math question?

Question

Simplify fully and state restrictions:

(3x^2 - 4x + 5) - (5x^2 - 6x + 15) -4

My answer was-x^2 + x -7, but I think it's wrong (and I can't find restrictions either...).

Answer 1

okay i got -x^2 + x - 11

I could be totally I'm  only an eighth grader, but i am taking Algebra II.

i can explain if you want how i did that if you want.

[e-mail]

Answer 2

-2x^2+2x-14

dont forget to multiply in the (-) in the second bracket. it changes all the signs to the opposite sign.

Answer 3

-2x^2+2x-14

The roots will be imaginary, but there are no domain restrictions

Answer 4

It should be -2x^2 + 2x -14.