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Question

The expression (1+a)3 when using a suitable property is simplified we get .


Your Answer
A
1+3a2
Your Answer
B
1+a2+3a+3a3
Correct Answer
C
1+a3+3a+3a2

Solution

The correct option is C 1+a3+3a+3a2
We can see that the given polynomial is of the form - (x+y)3.

(x+y)3 = x3y33x2y3xy2

By simplifying we get-

(1+a)3 = 1 + a33a3a2

 

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