Question

tinh bằng cách thuật tiện nhất 

\(\frac{1}{10}x\frac{2}{9}x\frac{3}{8}x\frac{4}{7}x\frac{5}{6}x\frac{6}{5}x\frac{7}{4}x\frac{8}{3}x\frac{9}{2}\)

Answer 1

= \(x^8.\frac{1}{10}.\frac{2}{9}.\frac{3}{8}.\frac{4}{7}.\frac{5}{6}.\frac{6}{5}.\frac{7}{4}.\frac{8}{3}.\frac{9}{2}\)

= \(x^8.\frac{1}{10}.\left(\frac{2}{9}.\frac{9}{2}\right).\left(\frac{3}{8}.\frac{8}{3}\right).\left(\frac{4}{7}.\frac{7}{4}\right).\left(\frac{5}{6}.\frac{6}{5}\right)\)

= \(x^8.\frac{1}{10}.1.1.1.1\)

= \(x^8.\frac{1}{10}\)

Mk ko pik co dung ko nua

Answer 2

=4/10

Answer 3

\(\frac{x^8}{10}\)

Answer 4

1/10x2/9x3/8x4/7x5/6x6/5x7/4x8/3x9/2

=1/10x2/9x3/8x4/7x5/6x6/5x7/4x8/3x9/2

=1/10

Vậy kết quả của phép tính trên bằng 1/10