27x^3-125y^3+64+180xy factorise
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Answer:
Step-by-step explanation:
27x³ - 125y³ + 4³ + 180xy
= (3x)³ + (-5y)³ + (4)³ - 3(3x)(-5y)(4)
= we know that ,
a³ + b³ + c³ - 3abc = (a+b+c)(a²+b²+c² -ab-bc-ca)
= ( 3x - 5y + 4 ) ( 9x² + 25y² + 16 + 15xy + 20y - 12x )
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