Datrys [(1-1/3)^2+(1-1/9)]:(2-1/3)=

$$[ ( 1 - \frac { 1 } { 3 } ) ^ { 2 } + ( 1 - \frac { 1 } { 9 } ) ] : ( 2 - \frac { 1 } { 3 } ) =$$

Enrhifo

$$\frac{4}{5}=0.8$$

Camau Ateb

Tynnu \frac{1}{3} o 1 i gael \frac{2}{3}.

$$\frac{\left(\frac{2}{3}\right)^{2}+1-\frac{1}{9}}{2-\frac{1}{3}}$$

Cyfrifo \frac{2}{3} i bŵer 2 a chael \frac{4}{9}.

$$\frac{\frac{4}{9}+1-\frac{1}{9}}{2-\frac{1}{3}}$$

Adio \frac{4}{9} a 1 i gael \frac{13}{9}.

$$\frac{\frac{13}{9}-\frac{1}{9}}{2-\frac{1}{3}}$$

Tynnu \frac{1}{9} o \frac{13}{9} i gael \frac{4}{3}.

$$\frac{\frac{4}{3}}{2-\frac{1}{3}}$$

Tynnu \frac{1}{3} o 2 i gael \frac{5}{3}.

$$\frac{\frac{4}{3}}{\frac{5}{3}}$$

Rhannwch \frac{4}{3} â \frac{5}{3} drwy luosi \frac{4}{3} â chilydd \frac{5}{3}.

$$\frac{4}{3}\times \frac{3}{5}$$

Lluosi \frac{4}{3} a \frac{3}{5} i gael \frac{4}{5}.

$$\frac{4}{5}$$

Ffactor

$$\frac{2 ^ {2}}{5} = 0.8$$