Question

all plzz these are tye last​

Answer 1

Answer:

${x}^{2} z - {x}^{2} y + 4z - 4y \\ {x}^{2} (z - y) + 4(z - y) \\ ( {x}^{2} +4 )(z - y)$

${x}^{3} - 3 {x}^{2} y + xy - 3 {y}^{2} \\ {x}^{2} (x - 3y) + y(x - 3y) \\ ( {x}^{2} + y)(x - 3y)$