\(\frac{4}{3}\times\frac{9}{8}\times...\times\frac{81}{80}=\frac{2^2}{1\times3}\times\frac{3^2}{2\times4}\times...\times\frac{9^2}{8\times10}\)

\(=\frac{2\times3\times4\times...\times9}{1\times2\times3\times...\times8}\times\frac{2\times3\times4\times...\times9}{3\times4\times5\times...\times10}\\ =\frac{9}{1}\times\frac{2}{10}=\frac{9}{5}\)

4/3.9/8.16/15.25/24.36/35.49/48.64/63.81/80

=3/2.16/15.25/24.36/35.49/48.64/63.81/80

=5/3.36/35.49/48.64/63.81/80

=7/4.64/63.81/80

=9/5

+

=(3.8.15.24.36.48.63)/(4.9.16.25.36.49.64)=81/140

=>[x+1]=2⁴

=>x+1  =2

=>x      =2-1

=>x      =1

\(\left(x+1\right)^4=64\)

kiểm tra lại đề xem bạn

thấy ra kq dài quá

kiểm tra lại đề đi bạn mk thấy nó sai sai thế nào ấy

1.

3.10.15 - 6.5.25

= 30.15 - 30.25

= 30.(15 - 25)

= 30.(-10)

= -300

    3 . 10 . 15 - 6 . 5 . 25

= 30 . 15 - 30 . 25

= 30 . (15 - 25)

= 30 . (-10)

= -300

3 . 10 . 15 - 6 . 5 . 25

= 30 . 15 - 30 . 25

= 30 . (15 - 25)

= 30 . (-10)

= -300

25×134×4+62×5×11= 16810

ban nhớ k cho mình nhé