2^2-4*(-1/5)*4 eching

$$2 ^ { 2 } - 4 \cdot ( - \frac { 1 } { 5 } ) \cdot 4$$

Baholash

$$\frac{36}{5}=7,2$$

Yechim qadamlari

2 daraja ko‘rsatkichini 2 ga hisoblang va 4 ni qiymatni oling.

$$4-4\left(-\frac{1}{5}\right)\times 4$$

4\left(-\frac{1}{5}\right) ni yagona kasrga aylantiring.

$$4-\frac{4\left(-1\right)}{5}\times 4$$

-4 hosil qilish uchun 4 va -1 ni ko'paytirish.

$$4-\frac{-4}{5}\times 4$$

\frac{-4}{5} kasri manfiy belgini olib tashlash bilan -\frac{4}{5} sifatida qayta yozilishi mumkin.

$$4-\left(-\frac{4}{5}\times 4\right)$$

-\frac{4}{5}\times 4 ni yagona kasrga aylantiring.

$$4-\frac{-4\times 4}{5}$$

-16 hosil qilish uchun -4 va 4 ni ko'paytirish.

$$4-\frac{-16}{5}$$

\frac{-16}{5} kasri manfiy belgini olib tashlash bilan -\frac{16}{5} sifatida qayta yozilishi mumkin.

$$4-\left(-\frac{16}{5}\right)$$

-\frac{16}{5} ning teskarisi \frac{16}{5} ga teng.

$$4+\frac{16}{5}$$

4 ni \frac{20}{5} kasrga o‘giring.

$$\frac{20}{5}+\frac{16}{5}$$

\frac{20}{5} va \frac{16}{5} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{20+16}{5}$$

36 olish uchun 20 va 16'ni qo'shing.

$$\frac{36}{5}$$

Omil

$$\frac{2 ^ {2} \cdot 3 ^ {2}}{5} = 7\frac{1}{5} = 7,2$$