Question

-3x+5y cube expand the following

Answer 1

Answer:

-27x³ + 125y³ + 135x²y - 225xy²

Step-by-step explanation:

(-3x + 5y)³

Formula-: (a + b)³ =  a³ + b³ +3ab(a + b)

Apply the formula-

(-3x + 5y)³ = (-3x)³ + (5y)³ + 3(-3x)(5y)(-3x + 5y)

(-3x + 5y)³ = -27x³ + 125y³ - 45xy(-3x + 5y)

(-3x + 5y)³ = -27x³ + 125y³ + 135x²y - 225xy²

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