Question

C=\(\left[-45^{10}.\left(-5\right)^{10}\right]:75^{10}\)

B=\(\left(7^4-7^3\right)^3:343^{12}\)

Tính giá trị của mỗi biểu thức:

Answer 1

\(C=\left[-45^{10}.\left(-5\right)^{10}\right]:75^{10}\)

\(C=\left(-45^{10}.5^{10}\right):75^{10}\)

\(C=\left(-45.5\right)^{10}:75^{10}\)

\(C=\left(-225\right)^{10}:75^{10}\)

\(C=\left(-225:75\right)^{10}=\left(-3\right)^{10}=3^{10}\)

\(B=\left(7^4-7^3\right)^3:343^{12}\)

\(B=\left[7^3.\left(7-1\right)\right]^3:\left(7^3\right)^{12}\)

\(B=\left(7^3.6\right)^3:7^{36}\)

\(B=7^9.6^3:7^{36}\)

\(B=6^3:7^{27}\)