54x^6+2x^3y^3 factorise
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Solution:
54x^6+2x³y³
= 2x³( 27x³+y³)
= 2x³[ (3x)³+y³]
= 2x³(3x+y)[(3x)²-(3x)y+y²]
= 2x³(3x+y)(9x²-3xy+y²)
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