Question

x² + 3y²- z² + 2yz - 4xy.​

Answer 1

$\huge\underline\mathfrak\purple{Bts}$

Answer 2

Answer:

(x-y+z) (x-3y-z)

Step-by-step explanation:

x2-4xy+4y2-(y2+2yz+z2)=(x-2y)2-(y+z)2=(x-y+z)( x-3y-z)