a3 - b3, a3 + b3 এর গ.সা.গু কত?

A a + b

B 1

C a - b

D a2 + ab + b2

Solution

Correct Answer: Option B

১ম রাশি = a3 - b3
           =(a - b)(a2 + ab + b2)

২য় রাশি = a3 + b3
           = (a + b)(a2 - ab + b2)

নির্ণেয় গ.সা.গু = 1

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