Question

64mũ7 : 4mũ3 81mũ12 . 3mũ5 125mũ30 : 25mũ12

Answer 1

\(64^7=\left(2^6\right)^7=2^{42}\)

\(4^3=\left(2^2\right)^3=2^6\)

\(81^{12}=\left(3^4\right)^{12}=3^{48}\)

\(3^5=3\cdot3\cdot3\cdot3\cdot3=243\)

\(125^{30}=\left(5^3\right)^{30}=5^{90}\)

\(25^{12}=\left(5^2\right)^{12}=5^{24}\)

Answer 2

Nhưng bạn cũng có thể dùng X² được mà!

Answer 3

647=(26)7=242647=(26)7=242

${}^{}={}^{}={}^{}$

8112=(34)12=3488112=(34)12=348

${}^{}=3\cdot 3\cdot 3\cdot 3\cdot 3=243$

12530=(53)30=59012530=(53)30=590

2512=(52)12=524