Question

Expand:-
1) (2x+1)^2

whoever answers correct will be marked brainiest

Answer 1

Answer:

4x^2 + 1 + 4x

Step-by-step explanation:

we use the formula a plus b whole square

Answer 2

To expand : $( 2x + 1 )^{2}$

Solution :

• To expand the given expression , we use identity

       $( a+ b) ^{2} = a^{2} + 2ab +b^{2}$

• Here,  $a = 2x$ and $b =1$ .
• Therefore , applying the above identity we get ,

        $( 2x + 1)^{2} = (2x )^{2} + 2 ( 2x) ( 1) + (1 )^{2}$  

                       $= 4x^{2} + 4x + 1$

Hence , expansion of  $( 2x + 1 )^{2}$  is $4x^{2} + 4x + 1$ .