7*10^-7*3*10^-7= eching

$$7 \times 10 ^ { - 7 } \times 3 \times 10 ^ { - 7 } =$$

Baholash

$$\frac{21}{100000000000000}=2,1 \cdot 10^{-13}$$

Yechim qadamlari

Ayni asosning daraja ko‘rsatkichlarini ko‘paytirish uchun ularning darajalarini qo‘shing. -7 va -7 ni qo‘shib, -14 ni oling.

$$7\times 10^{-14}\times 3$$

-14 daraja ko‘rsatkichini 10 ga hisoblang va \frac{1}{100000000000000} ni qiymatni oling.

$$7\times \frac{1}{100000000000000}\times 3$$

\frac{7}{100000000000000} hosil qilish uchun 7 va \frac{1}{100000000000000} ni ko'paytirish.

$$\frac{7}{100000000000000}\times 3$$

\frac{21}{100000000000000} hosil qilish uchun \frac{7}{100000000000000} va 3 ni ko'paytirish.

$$\frac{21}{100000000000000}$$

Omil

$$\frac{3 \cdot 7}{2 ^ {14} \cdot 5 ^ {14}} = 2,0999999999999996 \times 10^{-13}$$