Factorise the following expression:-
• 27x⁴-8x
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Step-by-step explanation:
27x⁴ - 8x
= x[27x³ - 8]
= x[(3x)³ - (2)³] [a³ - b³ = (a - b)(a² + ab + b²)]
= x(3x - 2)[(3x)² + 3x*2 + (2)²]
= x(3x - 2)(9x² + 6x + 4)
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