Question

6. Factorise :
(i) x2 - y2 - 2x +1​

Answer 1

Answer:

Step-by-step explanation:

To factorise

Regroup it

X2 +2x+1-y2

Using identities (x+y)2= x2+y2+2xy

(X)2 + 2(x) (1) +(1)2 -(y) 2

(X-y) 2-y2

Using identity

a2-b2 =(x+1+y) (x+1+y)

Thank you

Answer 2

Answer:

(x-y)(x+y)-2x+1

Step-by-step explanation:

=x^2-y^2-2x+1

=(x-y)(x+y)-2x+1 (by using 3rd identity= x^2-y^2= (x-y)(x+y)

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