expand (x+y)2 - (x-y)2?
please hlp
Answers
Answered by
1
Answer:
4xy
Step-by-step explanation:
(x+y)2-(x-y)2
x2+y2+2xy-(x2+y2-2xy)
x2+y2+2xy-x2-y2+2xy
4xy
Answered by
0
Answer:
= (2x+2y) - (2x-2y)
= 2x+2y -2x +2y
= 4y
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