Question

9x² - 6xy + y² - z² Factorise
ans: (3x-y+z) (3x-y-z) ​

Answer 1

Step-by-step explanation:

9x²-6xy+y²-z²

(3x)²-2(3x)(y)+y²-z² (a-b)²=a²-2ab+b²

(3x-y)²-z² a²-b²=(a+b)(a-b)

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

Answer 2

Step-by-step explanation:

3x { 3x -2y } + { y +z} { y - z }

{ 3x - y + z } { 3x - y - z }