factorise
8x³-36 x³y + 54 xy²- 27y²
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Correct Question :-
→ 8x³ - 36x³y + 54xy² - 27y³
Apply identity : (a - b)³ = a³ - b³ - 3ab(a - b)
→ 8x³ - 27y³ - 36x³y + 54xy²
→ (2x)³ - (3y)³ - 3 × 2x × 3y(2x - 3x)
→ (2x - 3y)³
→ (2x - 3y)(2x - 3y)(2x - 3y)
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