Question

simplify
(2x + 5)² - (2x - 5) ²​

Answer 1

Answer:

(2x+5)²-(2x-5)²

= (2x+5+2x-5)(2x+5-2x+5)

= (2x)(25)

= 50x

Read my bio once

Answer 2

$\large{\mathbb{\purple{\boxed{\green{\underbrace{\overbrace{\red{\boxed{\green{♪Answer♪}}}}}}}}}}$

(2x + 5)² - (2x - 5)²

=> (2x)² + (5)² + 2(2x)(5) - [(2x)² + (5)² - 2(2x)(5)]

=> 4x² + 25 + 20x - [ 4x² + 25 - 20x ]

=> ${\cancel{4x²}} + {\cancel{25}} + 20x - {\cancel{4x²}} - {\cancel{25}} + 20x$

=> 20x + 20x

$\huge{\mapsto{\boxed{\blue{40x}}}}$