Question

please smart people help me with math (it's asked to: Division into square trinomial multipliers (if possible))​

Answer 1

M. (4x-1) (x+4)

K. (3x-1)(2x-1)

L.(2x-7)(x+5)

N.3x^2-4x+39

O.(3x-1)(3x+4)

Sorry if it's wrong but that's what I got