Question

a^4 -1÷625 factorise

Answer 1

A^4 - 1/625

= (A^2 + 1 /25)(A^2 - 1/ 25)

Ans= ( A^2 + 1/25)(A+ 1/5)(A-1/5)

Identity used =>

x^2 - y^2 = (x+y)(x-y)

Hope it helps

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