HELP! simple maths factorising D: (1 Viewer)

[cyndi_x3]

HELP?! please? D:


(4x^2 - y^2) / (2x^2 + 3xy - 2y^2 ) x (x^2 + 2xy) / (xy - 2x^2)


Thank you heaps in advance

 

[muzeikchun852]

the step is:

difference of two square / cross-multi x normal factorisation / normal factorisation
(2x + y)(2x - y) / (2x - y)(x + 2y) x x(x + 2y) / x(y-2x)

take out the common factors:
(2x + y) / (y-2x)