expanded form of (x-y)3. ( ) a)x3+3x2y-3xy2-y3 b)x3-3x2y+3xy2-y3 c)x3-3x2y-3xy2-y3 d) x3+3x2y+3xy2+y3
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(x-y)³.
c) x³-3x²y-3xy²-y³.
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