Question
\((x-y)^{3}\)
Solution
1
\(\text{Compare the expression } (x - y)^3 \text{ with } (a - b)^3 \text{ and find the value of }a \text{ and }b.\)
\(a = x; \space b = y\)
2
\(\text{Use the identity } (a - b)^3 = a^{3} - 3 a^{2} b + 3 a b^{2} - b^{3} \text{ to expand the given expression.}\)
\(x^{3} - 3 x^{2} y + 3 x y^{2} - y^{3}\)
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