add: (3x^2-4xy+y^2)+-8x^2-9xy-y^2)+(x^2+xy-2y^2)

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add: (3x^2-4xy+y^2)+-8x^2-9xy-y^2)+(x^2+xy-2y^2)

Mathematics
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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Sry the 8x^2 should have a parenthesis around it also
line them up its easier: 3x^2 -4xy +1y^2 -8x^2 -9xy -1y^2 1x^2 +1xy -2y^2 ----------------- -4x^2 -12xy -2y^2
what happened to the x^2 and xy where did they go, I'm not understanding that part

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-4x^2 -12xy -2y^2 ^^^^ ^^^^ i dont quite understand your response
in the last part of the equation where did the x go
i thought you where supposed to do what was in each bracket and then add those together
\(3x^2\) \( -4xy\) \( +1y^2 \) \(-8x^2\) \( -9xy\) \( -1y^2 \) \(1x^2\) \( +1xy\) \( -2y^2 \) ----------------- \(-4x^2\) \( -12xy \) \(-2y^2\)
the brackets are as used up as they can get; there is nothing to do inside of them
ok i put this question in last night and got the answer you gave me but they said the 4x^2 was positive not negative.
3+1-8 = -4 4-8 = -4 -4 = -4
k
http://www.wolframalpha.com/input/?i=%283x^2-4xy%2By^2%29%2B%28-8x^2-9xy-y^2%29%2B%28x^2%2Bxy-2y^2%29 agrees

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