Question

Express 4x^2-25 as a product of two binomials.

Answer 1

$4x^2-25=(2x)^2-5^2=(2x-5)(2x+5)$

Answer 2

4x^2-25= (2x)^2-5^2=(2x-5)(2x+5)

Used: a^2-b^2=(a+b)(a-b)