(2+5x^4-5x)-(7+6x+6x^2)
I believe the answer is 5x^4-6x^2-11x-5
remember to distribute invisible -1(2+5x^4-5x)-1(7+6x+6x^2)2+5x^4-5x-7-6x-6x^25x^4-6x^2-5x-6x+2-75x^4-6x^2-11x-5