Question 21 MarkWrite the reciprocal of $5+\sqrt{2}$.Answer$\frac{5-\sqrt{2}}{23}$View full question & answer→
Question 31 MarkWrite the rationalisation factor of $\sqrt{5}-2$.Answer$2+\sqrt{5}$View full question & answer→
Question 41 MarkWrite the rationalisation factor of $7-3 \sqrt{5}$.Answer$7+3 \sqrt{5}$View full question & answer→
Question 71 MarkIf $x=\sqrt{2}-1$, then write the value of $\frac{1}{x}$.Answer$\sqrt{2}+1$View full question & answer→
Question 81 MarkIf $x=3+2 \sqrt{2}$, then find the value of $\sqrt{x}-\frac{1}{\sqrt{x}}$.Answer2View full question & answer→
Question 91 MarkIf $x=2+\sqrt{3}$, find the value of $x+\frac{1}{x}$.Answer4View full question & answer→
Question 101 MarkIf $\frac{\sqrt{3}-1}{\sqrt{3}+1}=x+y \sqrt{3}$, find the values of $x$ and $y$.Answer$x=2, y=-1$View full question & answer→
Question 111 MarkIf $a=\sqrt{2}+1$, then find the value of $a-\frac{1}{a}$.Answer2View full question & answer→