Question

Q.5) Expand the following with suitable identity:
i) (2x - 3)3
ii) (3a +2b)3
iii) (107)3
iv) (297)3
​

Answer 1

Answer:

(3a+2b)

3

Using (a+b)

3

=a

3

+b

3

+3ab(a+b)

=(3a)

3

+(2b)

3

+3(3a2b)(3a+2b)

=27a

3

+8b

3

+18ab(3a+2b)

=27a

3

+8b

3

+57a

2

b+36ab

2

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Answer 2

Step-by-step explanation:

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