Datrys [(2-1/4)*(3-1/2)]^2-sqrt{4/9}=

$$[ ( 2 - \frac { 1 } { 4 } ) \cdot ( 3 - \frac { 1 } { 2 } ) ] ^ { 2 } - \sqrt { \frac { 4 } { 9 } } =$$

Enrhifo

$$\frac{3547}{192}\approx 18.473958333$$

Camau Ateb

Tynnu \frac{1}{4} o 2 i gael \frac{7}{4}.

$$\left(\frac{7}{4}\left(3-\frac{1}{2}\right)\right)^{2}-\sqrt{\frac{4}{9}}$$

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

$$\left(\frac{7}{4}\times \frac{5}{2}\right)^{2}-\sqrt{\frac{4}{9}}$$

Lluosi \frac{7}{4} a \frac{5}{2} i gael \frac{35}{8}.

$$\left(\frac{35}{8}\right)^{2}-\sqrt{\frac{4}{9}}$$

Cyfrifo \frac{35}{8} i bŵer 2 a chael \frac{1225}{64}.

$$\frac{1225}{64}-\sqrt{\frac{4}{9}}$$

Ailysgrifennu ail isradd y rhaniad \frac{4}{9} fel rhaniad ail israddau \frac{\sqrt{4}}{\sqrt{9}}. Cymryd ail isradd y rhifiadur a'r enwadur.

$$\frac{1225}{64}-\frac{2}{3}$$

Tynnu \frac{2}{3} o \frac{1225}{64} i gael \frac{3547}{192}.

$$\frac{3547}{192}$$

Ffactor

$$\frac{3547}{2 ^ {6} \cdot 3} = 18\frac{91}{192} = 18.473958333333332$$