Question

please solve this question fast

Answer 1

$(8a^3-27b^3)/(64x^3+y^3)\\\\={(2a)^3-(3b)^3}/{(4x)^3+y^3}\\\\={(2a-3b)(4a^2+6ab+9b^2)}/{(4x+y)(16x^2-8xy+y^2)}$

This is the answer.