38+(4-1)*5^-22*4= eching

$$38 + ( 4 - 1 ) \cdot 5 ^ { - 2 } 2 \cdot 4 =$$

Baholash

$$\frac{974}{25}=38,96$$

Yechim qadamlari

3 olish uchun 4 dan 1 ni ayirish.

$$38+3\times 5^{-2}\times 2\times 4$$

-2 daraja ko‘rsatkichini 5 ga hisoblang va \frac{1}{25} ni qiymatni oling.

$$38+3\times \frac{1}{25}\times 2\times 4$$

\frac{3}{25} hosil qilish uchun 3 va \frac{1}{25} ni ko'paytirish.

$$38+\frac{3}{25}\times 2\times 4$$

\frac{6}{25} hosil qilish uchun \frac{3}{25} va 2 ni ko'paytirish.

$$38+\frac{6}{25}\times 4$$

\frac{24}{25} hosil qilish uchun \frac{6}{25} va 4 ni ko'paytirish.

$$38+\frac{24}{25}$$

\frac{974}{25} olish uchun 38 va \frac{24}{25}'ni qo'shing.

$$\frac{974}{25}$$

Omil

$$\frac{2 \cdot 487}{5 ^ {2}} = 38\frac{24}{25} = 38,96$$