3sqrt{81}-2*(1/2)^2+4^-1 eching

$$3 \sqrt { 81 } - 2 \cdot ( \frac { 1 } { 2 } ) ^ { 2 } + 4 ^ { - 1 }$$

Baholash

$$\frac{107}{4}=26,75$$

Yechim qadamlari

81 ning kvadrat ildizini hisoblab, 9 natijaga ega bo‘ling.

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

27 hosil qilish uchun 3 va 9 ni ko'paytirish.

$$27-2\times \left(\frac{1}{2}\right)^{2}+4^{-1}$$

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

$$27-2\times \frac{1}{4}+4^{-1}$$

\frac{1}{2} hosil qilish uchun 2 va \frac{1}{4} ni ko'paytirish.

$$27-\frac{1}{2}+4^{-1}$$

\frac{53}{2} olish uchun 27 dan \frac{1}{2} ni ayirish.

$$\frac{53}{2}+4^{-1}$$

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

$$\frac{53}{2}+\frac{1}{4}$$

\frac{107}{4} olish uchun \frac{53}{2} va \frac{1}{4}'ni qo'shing.

$$\frac{107}{4}$$

Omil

$$\frac{107}{2 ^ {2}} = 26\frac{3}{4} = 26,75$$