Question

factorise x²-y²-x+y plz tell this question​

Answer 1

Answer:

(i) x²+y²

≡ (x+y)²-2xy

≡ (x+y+√(2xy))(x+y-√(2xy))

(ii) x²+y²

≡ x²-(iy)²

≡ (x+iy)(x-iy)

(iii) x²+y²

≡y²+x²

≡y²-(ix)²

≡(y+ix)(y-ix)

(iv) x²+y²

≡ (x-y)²+2xy

≡(x-y)²-(i√2xy)²

≡ {x-y+i√(2xy)}{x-y-i√(2xy)}

Step-by-step explanation:

Answer 2

Answer:

(x-y-1)(x-y)

Step-by-step explanation:

x²-y²-x+y

⇒ (x+y)(x-y)-x-y

⇒ (x+y)(x-y)-1(x-y)

⇒ (x-y-1)(x-y)