gibsonj338

$\sqrt{50}$

$\sqrt{25\times2}$

$\sqrt{25}\times\sqrt{2}$

$5\times\sqrt{2}$

$5\sqrt{2}$

$5\times 1.414213562373095...$

$7.071067811865475...$

$\frac{1km}{1000m}=\frac{20km}{x}+8m$

$1km\times x=20km\times1000m+8m$

$1\times x=20000m+8m$

$x=20000m+8m$

$x=20008m$

$\sqrt{5}\times\sqrt{2x-1}$

$\sqrt{5\times(2x-1)}$

$\sqrt{10x-5}$

Question One:

${8}^{-2}$

$\frac{1}{{8}^{2}}$

$\frac{1}{64}$

Question Two:

$2+2$

$4$

${6y}^{-4}$

$\frac{1}{{6y}^{4}}$

$\frac{7}{2}-{2}^{2}$

$\frac{7}{2}-4$

$\frac{7}{2}-\frac{8}{2}$

$-\frac{1}{2}$

$\frac{6\times\sqrt{3}}{2}$

$3\times\sqrt{3}$

${20}^{2}-4\times4\times25$

$400-4\times4\times25$

$400-16\times25$

$400-400$

$0$

If you mean $\sqrt{\frac{2}{3}}:$

$\sqrt{\frac{2}{3}}$

$\frac{\sqrt{2}}{\sqrt{3}}$

$\frac{\sqrt{2}\sqrt{3}}{\sqrt{3}\sqrt{3}}$

$\frac{\sqrt{6}}3$

If you mean $\frac{\sqrt{2}}{3}:$

$\frac{\sqrt{2}}{3}$