plzz solve guyzz.....just these 4 questions
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9. 2xy-13xypower2+2xpower2 y
-4xy-3xypower2+9xpower2y
sum=-2xy-10xypower2+11xpower2y
difference of =-2xy-10xypower2+11xpower2y
+4xy-3xypower2+11xpower2y
– + –
answer of q.no 9 –6xy–7xypower2–xpower2y
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