Simplify the following expression.
(4x + 1)2 - (4x + 3) (4x - 1)
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 4.
(4x + 1)(4x + 1) - (4x + 3)(4x - 1)
⇒16x2 + 8x + 1 - [16x2 + 8x - 3]
⇒16x2 + 8x + 1 - 16x2 - 8x + 3
⇒ 1 + 3 = 4