2^-3+2^0-2^2 eching

$${ 2 }^{ -3 } + { 2 }^{ 0 } - { 2 }^{ 2 }$$

Baholash

$$-\frac{23}{8}=-2,875$$

Yechim qadamlari

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

$$\frac{1}{8}+2^{0}-2^{2}$$

0 daraja ko‘rsatkichini 2 ga hisoblang va 1 ni qiymatni oling.

$$\frac{1}{8}+1-2^{2}$$

\frac{9}{8} olish uchun \frac{1}{8} va 1'ni qo'shing.

$$\frac{9}{8}-2^{2}$$

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

$$\frac{9}{8}-4$$

-\frac{23}{8} olish uchun \frac{9}{8} dan 4 ni ayirish.

$$-\frac{23}{8}$$

Omil

$$-\frac{23}{8} = -2\frac{7}{8} = -2,875$$