Question

Expand using a suitable identity: a. ( 2x + 1 ) ( 2x -1 )​

Answer 1

Expand using a suitable identity: a. ( 2x + 1 ) ( 2x -1 )

Answer 2

Step-by-step explanation:

using formula : (a+b ) ( a-b) = a^2 - b^2

(2x+1)(2x-1) = (2x)^2 - 1^2

= 4x^2 - 1

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