x+1,x²-1 এর ল.সা.গু কত?

A (x+1)²

B (x²-4)

C (x²-1)

D (x⁴-1)

Solution

Correct Answer: Option C

১ম রাশি =x+1
২য় রাশি =x²-1
              =(x+1)(x-1)
অতএব , (x+1) এবং (x²-1) এর ল.সা.গু =(x+1)(x-1)
                                                           =x²-1

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