Find the sum of expressions : 3x + 4xy – y2
, - 4x + xy+ 2y2 , 6x – xy +3y
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Answer:
5x+4xy-y²+3y
Step-by-step explanation:
3x+4xy-y²+(-4x+xy+2y²)+6x-xy+3y
=3x+4xy-y²-4x+xy+2y²+6x-xy+3y
=3x-4x+6x+4xy+xy-xy-y²+2y²+3y
=-x+6x+4xy-y²+3y (+xy, -xy cancelled)
=5x+4xy-y²+3y
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