Question

answer the 28th Q (b)

Answer 1

25^4=5^2^4=5^8
25^4÷5^3=5^8÷5^3=5^8-3=5^5
=3125

Answer 2

(25⁴) ÷5³

(5²)⁴ ÷5³

(5)^[2 * 4] ÷5³

(5)^[ 8 ] ÷5³

5^(8 -3)

5^(5)

25*25*5

625 * 5

3125

I hope this will help you

-by ABHAY