Question

factorise xy+zx+y2-z2
pls help​

Answer 1

Answer:

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

Step-by-step explanation:

xy + zx + y² - z²

USING (a+b)(a-b) = a² - b² IDENTITY,

= xy + zx + (y + z)(y - z)

TAKING 'x' COMMON IN THE FIRST TWO TERMS,

= x(y + z) + (y + z)(y - z)

TAKING (y + z) COMMON,

= (y + z)(x + y - z)