exapand 8y^3-125x^3
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Step-by-step explanation:
8y³-125x³
Using Identity = a³-b³ = a³-b³ - 3xy ( x - y)
Note =>
a = 8y
b = 5x ( Positive in Identity )
Therefore,
(8y³) - (5x)³ - 3×8y×5x ( 8y-5x )
512y³ - 125x³ - 120xy ( 8y - 5x )
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