x2 - y2 + 2x + 1 এর একটি উৎপাদক হলো-
Solution
Correct Answer: Option B
x2 - y2 + 2x + 1
= x2 + 2x + 1 - y2
= x2 + 2.x.1 + 12 - y2
= (x + 1)2 -y2
= (x + 1 + y)(x + 1 - y)
= (x + y + 1) (x - y + 1)
= x2 + 2x + 1 - y2
= x2 + 2.x.1 + 12 - y2
= (x + 1)2 -y2
= (x + 1 + y)(x + 1 - y)
= (x + y + 1) (x - y + 1)
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