Simplify the following expression completely (5x4+5x3-17x2+6x)-(3x4+6x3-7x2-12)/ x+2

Please show your work

6x^2+3x-4/x

Step-by-step explanation:

first multiply to get (20+5x3-17x2+6x)-3x4+6x3-7x2-12/x+2

then remove the two opposites that add up to zero to get (20+15-34+6x)-6x3-7x2/x+2

then remove unnecessarry parentheses to get 1+6x-18-14/x+2 and then calculate to get 3+6x-4/x

then write all of the numerators above the common denominator to get 3x+6x^2-4/x and reorder the terms to get your solution which is 6x^2+3x-4/x

please give brainliest it took forever lol

answer: it is a.,b.,d.

step-by-step explanation: