-9^2/2+9(-9/2)+18 eching

$$- \frac { 9 ^ { 2 } } { 2 } + 9 ( - \frac { 9 } { 2 } ) + 18$$

Baholash

$$-63$$

Yechim qadamlari

2 daraja ko‘rsatkichini 9 ga hisoblang va 81 ni qiymatni oling.

$$-\frac{81}{2}+9\left(-\frac{9}{2}\right)+18$$

9\left(-\frac{9}{2}\right) ni yagona kasrga aylantiring.

$$-\frac{81}{2}+\frac{9\left(-9\right)}{2}+18$$

-81 hosil qilish uchun 9 va -9 ni ko'paytirish.

$$-\frac{81}{2}+\frac{-81}{2}+18$$

\frac{-81}{2} kasri manfiy belgini olib tashlash bilan -\frac{81}{2} sifatida qayta yozilishi mumkin.

$$-\frac{81}{2}-\frac{81}{2}+18$$

-\frac{81}{2} va \frac{81}{2} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{-81-81}{2}+18$$

-162 olish uchun -81 dan 81 ni ayirish.

$$\frac{-162}{2}+18$$

-81 ni olish uchun -162 ni 2 ga bo‘ling.

$$-81+18$$

-63 olish uchun -81 va 18'ni qo'shing.

$$-63$$

Omil

$$-63$$