factorize completely 3mn-6n^2 3n(m-2n) is this correct?

Factorize completely 2y squared -11y +15

factorize completely X^2 + 2X^2 - 15X / 2X^2 - 18

factorize completely: a+b-bc-ac

factorize completely 12x squared -23x +5

factorize completely : 16-36p squared

factorize completely x^2 2xy Y^2 3x 3y-8?

Factorize completely: 3x²-2xy-y

Factorize completely (i) 4X^2 - 25

factorize completely the expression 4x^2-8xy+16y^2

Factorize completely a^2 - ax - 1 + x

Asked by Deron