Question

(2x + 5)^2-(2x-5)^2​

Answer 1

Answer:

40x

Step-by-step explanation:

${(2x + 5) }^{2} - {(2x - 5) }^{2} \\ = (2x + 5 + 2x - 5)(2x + 5 - 2x + 5) \\ = (4x)(10) \\ = 40x$

by using identity

${x}^{2} - {y}^{2} = (x + y)(x - y)$