x-y/x2-xy+y2+x+y/x2+xy+y2-2y3/x4+x2y2+y4
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1
Answer:
The answer is :
= x4 - y10 ÷ x8 + xy2 - 2y3 .
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Answer:
x4 + x2y2 + y4 = (x4 + 2x2y2 + y4) - x2y2 (note that one term is added and subtracted)
= (x2 + y2)2 – (xy)2, , by (4)
= [(x2 + y2) + xy] [(x2 + y2) – xy] , by (1)
= (x2 + xy + y2)(x2 –xy + y2)
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