Question

factorise the expression 25 - 4y^2​

Answer 1

Answer:

there is nothing common in this

Step-by-step explanation:

i don't think that we can factorise it

Answer 2

Answer:

(5 + 4y)(5 - 4y)

Step-by-step explanation:

5^2 - 4y^2

A^2 - b^2 = (a + b) (a - b)

= (5 + 4y)(5 - 4y)

Hope it helps