Q. 3 B4.2( 19 Votes )

Factorise:

4x2 + 4x + 1

Answer :

using (x + y)2 = x2 + 2xy + y2

= (2x)2 + 2 × 2x × 1 + 12


= (2x + 1)2


= (2x + 1)(2x + 1)


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