Question

Factorise the following

a) P^
4 – 81 q^4

b) 2 – 50 y^2

c) ( 2a – 3b )^3 + ( 3b – 5c )^3 + ( 5c – 2a )^3

Answer 1

a) $(p {}^{2} + 9q {}^{2} )(p + 3q)(p - 3q)$

b) $2(1 - 25y {}^{2} )$
$2(1 - (5y) {}^{2} )$
$2(1 + 5y)(1 - 5y)$

c) As all the power is same , hence we can do like this---
$(2a - 3b + 3b - 5c + 5c - 2a) {}^{3}$
$(0) {}^{3}$
$0$

Answer 2

Answer:

answer given by this person