Issolvi (1/3)^-2+(2/3)^-2+(1/4)^-2

$$( \frac { 1 } { 3 } ) ^ { - 2 } + ( \frac { 2 } { 3 } ) ^ { - 2 } + ( \frac { 1 } { 4 } ) ^ { - 2 }$$

Evalwa

$$\frac{109}{4}=27.25$$

Passi tas-Soluzzjonijiet

Ikkalkula \frac{1}{3} bil-power ta' -2 u tikseb 9.

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

Ikkalkula \frac{2}{3} bil-power ta' -2 u tikseb \frac{9}{4}.

$$9+\frac{9}{4}+\left(\frac{1}{4}\right)^{-2}$$

Żid 9 u \frac{9}{4} biex tikseb \frac{45}{4}.

$$\frac{45}{4}+\left(\frac{1}{4}\right)^{-2}$$

Ikkalkula \frac{1}{4} bil-power ta' -2 u tikseb 16.

$$\frac{45}{4}+16$$

Żid \frac{45}{4} u 16 biex tikseb \frac{109}{4}.

$$\frac{109}{4}$$

Fattur

$$\frac{109}{2 ^ {2}} = 27\frac{1}{4} = 27.25$$