-3^2+50div2^2*(-1/5)-1= eching

$$- 3 ^ { 2 } + 50 \div 2 ^ { 2 } \times ( - \frac { 1 } { 5 } ) - 1 =$$

Baholash

$$-\frac{25}{2}=-12,5$$

Yechim qadamlari

2 daraja ko‘rsatkichini 3 ga hisoblang va 9 ni qiymatni oling.

$$-9+\frac{50}{2^{2}}\left(-\frac{1}{5}\right)-1$$

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

$$-9+\frac{50}{4}\left(-\frac{1}{5}\right)-1$$

\frac{50}{4} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$-9+\frac{25}{2}\left(-\frac{1}{5}\right)-1$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{25}{2} ni -\frac{1}{5} ga ko‘paytiring.

$$-9+\frac{25\left(-1\right)}{2\times 5}-1$$

\frac{25\left(-1\right)}{2\times 5} kasridagi ko‘paytirishlarni bajaring.

$$-9+\frac{-25}{10}-1$$

\frac{-25}{10} ulushini 5 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$-9-\frac{5}{2}-1$$

-9 ni -\frac{18}{2} kasrga o‘giring.

$$-\frac{18}{2}-\frac{5}{2}-1$$

-\frac{18}{2} va \frac{5}{2} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{-18-5}{2}-1$$

-23 olish uchun -18 dan 5 ni ayirish.

$$-\frac{23}{2}-1$$

1 ni \frac{2}{2} kasrga o‘giring.

$$-\frac{23}{2}-\frac{2}{2}$$

-\frac{23}{2} va \frac{2}{2} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{-23-2}{2}$$

-25 olish uchun -23 dan 2 ni ayirish.

$$-\frac{25}{2}$$

Omil

$$-\frac{25}{2} = -12\frac{1}{2} = -12,5$$