Question

(i) x2 - y2 + 2x + 1.​

Answer 1

Step-by-step explanation:

x2−y2+2x+1

= x2+2x+1−y2

= (x)2+2∗x∗1+(1)2−y2

= (x+1)2−y2

= (x+1)2−(y)2

= (x+1−y)(x+1+y)

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