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Let A=3y2+9x−3x2,B=6x2−2y2+3x,C=9x2−3xy−y2. Find A + B - C. |
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Answer» Let A=3y2+9x−3x2,B=6x2−2y2+3x,C=9x2−3xy−y2. Find A + B - C. |
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