Question

viết gọn các tích sau
d) 4 . 4 . 4 . 4 . 4 . 16
e) 5 . 5 . 5 . 5 . 3 . 3 . 3 . 15
e) 6 . 6 . 6 . 7 . 7 . 7 . 42
nhanh nha, tớ chấm cho

Answer 1

\(d.4.4.4.4.4.16=2^2.2^2.2^2.2^2.2^2.2^4=2^{14}\)

\(e.5.5.5.5.3.3.3.15=5^4.3^3.3.5=5^5.3^4\)

\(e.6.6.6.7.7.7.42=6^3.7^3.2.3.6=2^3.3^3.7^4.2.3=2^4.3^4.7^4\)

Answer 2

4.4.4.4.4.16=4.4.4.4.4.4.4=47

5.5.5.5.3.3.3.15=15.15.15.5.15=154.5

6.6.6.7.7.7.42=42.42.42.42=424

Answer 3

\(d)4.4.4.4.4.16\\ =4.4.4.4.4.4.4\\ =4^7\)

\(e)5.5.5.5.3.3.3.15\\ =5.5.5.5.3.3.3.5.3\\ =5^5.3^4\)

\(e)6.6.6.7.7.7.42\\ =6.6.6.7.7.7.6.7\\ =6^4.7^4\)

Answer 4

d) \(4\cdot4\cdot4\cdot4\cdot4\cdot16\)

\(=4\cdot4\cdot4\cdot4\cdot4\cdot4^2\)

\(=4^7\)

\(=\left(2^2\right)^7\)

\(=2^{14}\)

e) \(5\cdot5\cdot5\cdot5\cdot3\cdot3\cdot3\cdot15\)

\(=5\cdot5\cdot5\cdot5\cdot3\cdot3\cdot3\cdot5\cdot3\)

\(=5^5\cdot3^4\)

f) \(6\cdot6\cdot6\cdot7\cdot7\cdot7\cdot42\)

\(=6\cdot6\cdot6\cdot7\cdot7\cdot7\cdot6\cdot7\)

\(=6^4\cdot7^4\)

\(=\left(6\cdot7\right)^4\)

\(=42^4\)