Datrys f(1.1)=1.9^3-8/1.1-2

$$f ( 1.1 ) = \frac { 1.9 ^ { 3 } - 8 } { 1.1 - 2 }$$

Enrhifo

$$\frac{1141}{900}\approx 1.267777778$$

Camau Ateb

Cyfrifo 1.9 i bŵer 3 a chael 6.859.

$$\frac{6.859-8}{1.1-2}$$

Tynnu 8 o 6.859 i gael -1.141.

$$\frac{-1.141}{1.1-2}$$

Tynnu 2 o 1.1 i gael -0.9.

$$\frac{-1.141}{-0.9}$$

Ehangu \frac{-1.141}{-0.9} drwy luosi'r rhifiadur a'r enwadur gyda 1000.

$$\frac{-1141}{-900}$$

Gellir symlhau’r ffracsiwn \frac{-1141}{-900} i \frac{1141}{900} drwy dynnu’r arwydd negatif o’r rhifiadur a’r enwadur.

$$\frac{1141}{900}$$

Ffactor

$$\frac{7 \cdot 163}{2 ^ {2} \cdot 3 ^ {2} \cdot 5 ^ {2}} = 1\frac{241}{900} = 1.2677777777777777$$