Math, asked by rohitkatria24, 2 months ago

(i) (2x + 1)3 find its cube in expanded form

Answers

Answered by arunabalamohapatra

2

Answer:

Using (a + b)³ = a³ + b³ + 3ab(a + b)

Where a = 2x & b = 1

= (2x)³ + (1)³ + 3(2x)(1) (2x + 1)

= 8x³ + 1 + 6x(2x+1)

= 8x³ + 1 + 12x² + 6x

= 8x³ + 12x² + 6x + 1

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