Question

tính:a.\(2^6.5^6\)b.\(8^2.5^2\)c.\(4^3.5^3\)d.\(5^2.6^2.3^2\)e.\(\frac{625^5}{25^8}\)g.\(\frac{3^9}{7}.\frac{7^9}{3}\)

giúp mình nha các bạn !

 

Answer 1

a , 10⁶       b , 40²         c 20³                   d,90²             e , 5⁴               g , 21⁸

Answer 2

#)Giải :

a)\(2^6.5^6=\left(2.5\right)^6=10^6\)

b)\(8^2.5^2=\left(8.5\right)^2=40^2\)

c)\(4^3.5^3=\left(4.5\right)^3=20^3\)

d)\(5^2.6^2.3^2=\left(5.6.2\right)^2=60^2\)

e)\(\frac{625^5}{25^8}=\frac{\left(25^2\right)^5}{25^8}=\frac{25^{10}}{25^8}=25^2\)

g)\(\frac{3^9}{7}.\frac{7^9}{3}=\frac{\left(3.7\right)^9}{7.3}=\frac{21^9}{21}=21^8\)

Answer 3

a) 2⁶ . 5⁶ = (2.5)⁶ = 10⁶

b) 8².5² = (8.5)²   = 40²

c) 4³.5³ = (4.5)³   = 20³

d) 5².6².3² = (5.6.2)² = 60²

e) \(\frac{625^5}{25^8}=\frac{\left(25^2\right)^5}{25^8}=\frac{25^{2.5}}{25^8}=\frac{25^{10}}{25^8}=\frac{25^8.25^2}{25^8}=25^2=625\)

g) \(\frac{3^9}{7}.\frac{7^9}{3}=\frac{3^9.7^9}{7.3}=\frac{\left(7.3\right)^9}{7.3}=\frac{21^9}{21}=21^8\)

Answer 4

\(a,2^6.5^6=\left(2.5\right)^6=10^6\)

\(b,8^2.5^2=\left(8.5\right)^2=40^2\)

\(c,4^3.5^3=\left(4.5\right)^3=20^3\)

\(d,5^2.6^2.3^2=\left(5.6.2\right)^2=60^2\)

\(e,\frac{625^5}{25^8}=\frac{\left(25^2\right)^5}{25^8}=\frac{25^{10}}{25^8}=25^2\)

\(g,\frac{3^9}{7}.\frac{7^9}{3}=\frac{\left(3.7\right)^9}{7.3}=\frac{21^9}{21}=21^8\)