SOLUTION: Hello i have one more question to ask and that is, what is the additive inverse of -7x2 + y? Is it 7x^2-y, or something else??

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Question 751128: Hello i have one more question to ask and that is, what is the additive inverse of -7x2 + y? Is it 7x^2-y, or something else??
Found 2 solutions by josgarithmetic, jim_thompson5910:
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
Assume you have the additive inverse of -7x%5E2%2By. Call this number, a. If a is the additive inverse of -7x%5E2%2By, then a%2B%28-7x%5E2%2By%29=0.

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
You are correct. Notice how adding -7x^2 + y to 7x^2 - y gives you 0

(-7x^2 + y) + (7x^2 - y)

-7x^2 + y + 7x^2 - y

(-7x^2 + 7x^2) + (y - y)

0x^2 + 0y

0 + 0

0

So that proves 7x^2-y is the additive inverse of -7x^2+y