Question 11 MarkThe number obtained by rationalising the denominator of $\frac{1}{\sqrt{7}+2}$ is _______________ .Answer$\frac{\sqrt{7}-2}{3}$View full question & answer→
Question 21 Mark$\sqrt{7+2 \sqrt{6}}-\sqrt{7-2 \sqrt{6}}=$ _______________ .Answer2View full question & answer→
Question 31 MarkIf $x=\sqrt{6}+\sqrt{5}$, then $x^2+\frac{1}{x^2}-2=$ _______________ .Answer20View full question & answer→
Question 41 MarkIf $x=\frac{2}{\sqrt{3}-\sqrt{5}}$ and $y=\frac{2}{\sqrt{3}+\sqrt{5}}$, then $x+y=$ _______________ .Answer$-2 \sqrt{3}$View full question & answer→
Question 51 MarkIf $x=\frac{2}{\sqrt{10}-\sqrt{8}}$ and $y=\frac{2}{\sqrt{10}+2 \sqrt{2}}$, then $(x-y)^2=$Answer32View full question & answer→
Question 61 MarkIf $x=3-\sqrt{8}$, then $\left(x-\frac{1}{x}\right)^2=$ _______________ .Answer32View full question & answer→
Question 71 MarkIf $\sqrt{5+2 \sqrt{6}}=A+\sqrt{3}$, then $A=$ _______________ .Answer$\sqrt{2}$View full question & answer→
Question 81 MarkIf $\sqrt{13-x \sqrt{10}}=\sqrt{8}+\sqrt{5}$, then $x=$ _______________ .Answer-4View full question & answer→
Question 91 MarkIf $a=5+2 \sqrt{6}$, then $a+\frac{1}{a}=$ _______________ .Answer10View full question & answer→
Question 101 MarkIf $a=2+\sqrt{3}$, then $a-\frac{1}{a}=$ _______________ .Answer $2 \sqrt{3}$View full question & answer→
Question 111 Markf $\frac{1}{\sqrt{9}-\sqrt{8}}=A+B \sqrt{2}$, then $A=$ _______________ and $B=$ _______________ .Answer3,2View full question & answer→
Question 121 MarkAfter rationalising the denominator of $\frac{7}{3 \sqrt{3}-2 \sqrt{2}}$, we get the denominator as _______________ .Answer19View full question & answer→