Math, asked by pinkysri116, 9 hours ago

expand the following by using suitable formula (3x-y)³​

Answers

Answered by pranavkr69
0

Answer:

27x³-27x²y+3xy²-y³

Step-by-step explanation:

Using formula- (a-b)³= (a-b)(a²-2ab+b²

(3x-y)³ = (3x-y)((3x)²-2(3x)(y)+(y²)

= (3x-y)(9x²-6xy+y²)

Multiplying both we get

=27x³-18x²y-3xy²-9x²y+6xy²-y³

=27x³-27x²y+3xy²-y³

Hope it helps you

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