Question

Factorise (i) 64y3 + 125z3

Answer 1

Answer:

hii mate...

64y3 + 125z3

(4y)^3 + (5z)^3

now we know that a^3+b^3 =

(a+b) (a^2+b^2-ab) = (4y+5z) (16y+25z-20yz)

$o, (4y+5z) ( 16y+25z-20yz) is the answer.

Hope it helps u...