Question

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

answer it with formula​

Answer 1

(a+b) (a-b)

a^2-b^2

2x^2-5^2

4x^2-25

Answer 2

$: \longmapsto{ \rm{(2x + 5) (2x - 5)}}$

$: \longmapsto{ \rm{ a = 2x \: b = 5 }}$

$\: \: \: \diamond{ \rm{(a + b)(a - b) = ( {a}^{2 }- {b}^{2})} }$

$: \longmapsto{ \rm{( {2x}^{2 }- {5}^{2})} }$

$: \longmapsto{ \rm{ {4x}^{2 }- 25} }$