x2+2xy-2y = 1 এর উৎপাদক কত?

x²+2xy-2y = 1 এর উৎপাদক কত?

A (x+y+1)(x-1)

B (x + 2y+1)(x+1)

C (x+y+1)(x+1)

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

Solution

Correct Answer: Option D

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