(−2x^2+x+1)–(x^2–x+7)–(4x^2+2x+8)
Please explain

Step-by-step explanation:

First, remove the parenthesis.  Remember to distribute the negatives properly!

Next, rearrange the order of the numbers so it's easy to see the like terms.  Put the squared x's together, x's together, etc.  This step is optional but helpful.

Next, combine like terms.

Leave a note in the comments if you need me to elaborate on any steps.

overpriced

step-by-step explanation:

the answer is (-8,-5)

step-by-step explanation:

the endpoint to midpoint is half the length. the length is (-2,-1) so when you are at the midpoint just add it to it to find your answer -6+(-2)= -8 and -4+(-1)=-5 so (-8,-5)