Question

Factorise 16y^4 - 625 by using identity a^2 - b^2 = (a-b)(a+b) If you give correct answer I will give you 5 stars

Answer 1

Step-by-step explanation:

(4y²-25)(4y²+25)

(2y-5)(2y+5)(4y²+25)

Answer 2

Step-by-step explanation:

$16 {y}^{4} - 625 = {( {4y}^{2} )}^{2} - {25}^{2}$

$= (4 {y}^{2} - 25)(4 {y}^{2} + 25)$

$= ( {(2y)}^{2} - {5}^{2} )(4 {y}^{2} + 25)$

$= (2y - 5)(2y + 5)(4 {y}^{2} + 25)$

The stars you can keep with yourself kid