(3/7)^-5*(-9/49)^3*(-7)^2 eching

$$( \frac { 3 } { 7 } ) ^ { - 5 } \cdot ( - \frac { 9 } { 49 } ) ^ { 3 } \cdot ( - 7 ) ^ { 2 }$$

Baholash

$$-21$$

Yechim qadamlari

-5 daraja ko‘rsatkichini \frac{3}{7} ga hisoblang va \frac{16807}{243} ni qiymatni oling.

$$\frac{16807}{243}\left(-\frac{9}{49}\right)^{3}\left(-7\right)^{2}$$

3 daraja ko‘rsatkichini -\frac{9}{49} ga hisoblang va -\frac{729}{117649} ni qiymatni oling.

$$\frac{16807}{243}\left(-\frac{729}{117649}\right)\left(-7\right)^{2}$$

-\frac{3}{7} hosil qilish uchun \frac{16807}{243} va -\frac{729}{117649} ni ko'paytirish.

$$-\frac{3}{7}\left(-7\right)^{2}$$

2 daraja ko‘rsatkichini -7 ga hisoblang va 49 ni qiymatni oling.

$$-\frac{3}{7}\times 49$$

-21 hosil qilish uchun -\frac{3}{7} va 49 ni ko'paytirish.

$$-21$$

Omil

$$-21$$