Simplify:1.(x+y)^3-(x-y)^3
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Answer:
6x^(2)y
Step-by-step explanation:
(x+y)^3-(x-y)^3 = ( x^(3) + 3x^(2)y + 3xy^(2)+ y^(3) )
- ( x^(3) - 3x^(2)y + 3xy^(2)+ y^(3) )
(x+y)^3-(x-y)^3 = x^(3) + 3x^(2)y + 3xy^(2)+ y^(3)
- x^(3) +3x^(2)y - 3xy^(2)- y^(3)
(x+y)^3-(x-y)^3 = 6 x^(2)y.
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