arrange vertically and add:. 3x^2-5y^2+7z^2. and. 5x^2+3y^2-6z^2
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2
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=8x^2-2y^2+z^2 this is the answer
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1
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this is so simple, you can do it by putting the power above, because if if you will write like this it will be so lenghty
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