[(1/3)^-2-(1/2)^-3]div(1/2)^-2 eching

$$[ ( \frac { 1 } { 3 } ) ^ { - 2 } - ( \frac { 1 } { 2 } ) ^ { - 3 } ] \div ( \frac { 1 } { 2 } ) ^ { - 2 }$$

Baholash

$$\frac{1}{4}=0,25$$

Yechim qadamlari

-2 daraja ko‘rsatkichini \frac{1}{3} ga hisoblang va 9 ni qiymatni oling.

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

-3 daraja ko‘rsatkichini \frac{1}{2} ga hisoblang va 8 ni qiymatni oling.

$$\frac{9-8}{\left(\frac{1}{2}\right)^{-2}}$$

1 olish uchun 9 dan 8 ni ayirish.

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

-2 daraja ko‘rsatkichini \frac{1}{2} ga hisoblang va 4 ni qiymatni oling.

$$\frac{1}{4}$$

Omil

$$\frac{1}{2 ^ {2}} = 0,25$$