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blagie [28]
3 years ago
11

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

Mathematics
1 answer:
uranmaximum [27]3 years ago
7 0

Answer:

-7x^2-14

Step-by-step explanation:

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

(-2x^2+x+1)-(x^2-x+7)-(4x^2+2x+8)\\-2x^2+x+1-x^2+x-7-4x^2-2x-8

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.  <em>This step is optional but helpful.</em>

-2x^2-x^2-4x^2+x+x-2x+1-7-8

Next, combine like terms.

-7x^2+0x-14\\-7x^2-14

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

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