Question : If $\mathrm{p}=\frac{\sqrt{2}+1}{\sqrt{2}-1}$ and $\mathrm{q}=\frac{\sqrt{2}-1}{\sqrt{2}+1}$ then, find the value of $\frac{\mathrm{p}^2}{\mathrm{q}}+\frac{\mathrm{q}^2}{\mathrm{p}}$.
Option 1: 200
Option 2: 196
Option 3: 198
Option 4: 188
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Correct Answer: 198
Solution : Given: $\mathrm{p}=\frac{\sqrt{2}+1}{\sqrt{2}-1}$, $\mathrm{q}=\frac{\sqrt{2}-1}{\sqrt{2}+1}$ Rationalising $p$, we get: $p= 3+2\sqrt{2}$ ⇒ $p^2=17+12\sqrt{2}$ $\mathrm{q}=\frac{\sqrt{2}-1}{\sqrt{2}+1}$ Rationalising $q$, we get: $q= 3-2\sqrt{2}$ ⇒ $q^2=17-12\sqrt{2}$ $\therefore$ $\frac{\mathrm{p}^2}{\mathrm{q}}+\frac{\mathrm{q}^2}{\mathrm{p}}=(\frac{17+12\sqrt{2}}{3-2\sqrt{2}})+(\frac{17-12\sqrt{2}}{3+2\sqrt{2}})$ ⇒ $\frac{\mathrm{p}^2}{\mathrm{q}}+\frac{\mathrm{q}^2}{\mathrm{p}}=\frac{(17+12\sqrt{2})(3+2\sqrt{2})+(17-12\sqrt{2})(3-2\sqrt{2})}{(3+2\sqrt{2})(3-2\sqrt{2})}$ ⇒ $\frac{\mathrm{p}^2}{\mathrm{q}}+\frac{\mathrm{q}^2}{\mathrm{p}}=\frac{2\times 17\times 3+2\times 12\times2\times 2}{(3+2\sqrt{2})(3-2\sqrt{2})}$ ⇒ $\frac{\mathrm{p}^2}{\mathrm{q}}+\frac{\mathrm{q}^2}{\mathrm{p}}=198$ Hence, the correct answer is 198.
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Question : If $\sqrt{1+\frac{\sqrt{3}}{2}}-\sqrt{1-\frac{\sqrt{3}}{2}}=c$, then the value of $\mathrm{c}$ is:
Option 1: 1
Option 2: 4
Option 3: 3
Option 4: 2
Question : If $\sec ^2 \mathrm{~A}+\tan ^2 \mathrm{~A}=3$, then what is the value of $\cot \mathrm{A}$?
Option 1: $\frac{1}{\sqrt{3}}$
Option 2: $0$
Option 3: $1$
Option 4: $\sqrt{3}$
Question : If $p=9, q=\sqrt{17}$, then the value of $(p^2-q^2)^{-\frac{1}{3}}$ is equal to:
Option 1: 4
Option 2: $\frac{1}{4}$
Option 4: $\frac{1}{3}$
Question : If $\frac{\sqrt{26-7 \sqrt{3}}}{\sqrt{14+5 \sqrt{3}}}=\frac{b+a \sqrt{3}}{11}, b>0$, then what is the value of $\sqrt{(\mathrm{b}-\mathrm{a})}$?
Option 1: 5
Option 2: 25
Option 3: 12
Option 4: 9
Question : If $\mathrm{p}=7+4 \sqrt{3}$, then what is the value of $\frac{\mathrm{p}^6+\mathrm{p}^4+\mathrm{p}^2+1}{\mathrm{p}^3}$?
Option 1: 2617
Option 2: 2167
Option 3: 2716
Option 4: 2176
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