Question

Write down the expansion of the following:
1.(a + 1)³
2.(3x-2y)³
3.(x²+y)³​

Answer 1

Answer:

1. (a+1)³=a ³+1³+3a²(1)+3a(1)²

=a³+3a²+3a

=a(a²+3a+3)

2.(3x-2y)³=(3x)³-3(3x)²(2y)+3(3x)(2y)²-(2y)²

=27x³-54x²y+36xy²-4y²

3.(x²+y)³=(x²)³+3(x²)²(y)+3(x²)(y)²+(y)³

=x⁶+3x⁴y+3x²y²+y³

Step-by-step explanation:

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Answer 2

Answer:

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