1. \(\cfrac{2√5+1}{√5+1}-\cfrac{4√5-1}{√5-1}\)

2. যদি \(a = \cfrac{√5+1}{√5-1}\) ও \(b = \cfrac{√5-1}{√5+1}\) হয় তবে, \(\cfrac{a^2+ab+b^2}{a^2-ab+b^2}\) এর মান নির্ণয় কর ।

3. \(\cfrac{a^2+ab+b^2}{a^2-ab+b^2}\)

4. \(\cfrac{(a-b)^3}{(a+b)^3}\)

5. \(\cfrac{3a^2+5ab+3b^2}{3a^2-5ab+3b^2}\)

6. \(\cfrac{a^3+b^3}{a^3-b^3}\)