Question

(1,1x1,2x1,3x1,4x1,5)x(1,25-0,25x5)

Answer 1

(1,1x1,2x1,3x1,4x1,5)x(1,25-0,25x5)

=(1,1x1,2x1,3x1,4x1,5) x 0

= 0 

Answer 2

(1,1x1,2x1,3x1,4x1,5)x(1,25-0,25x5)

=(1,1x1,2x1,3x1,4x1,5)x(1,25-1,25)

=(1,1x1,2x1,3x1,4x1,5)x0

=0

Answer 3

bằng 0 đó bạn

Answer 4

[1,1x1,2x1,3x1,4x1,5x1,6]x[1,25-0,25x5]

=[1,1x1,2x1,3x1,4x1,5x1,6]x[1,25-1,25]

=[1,1x1,2x1,3x1,4x1,5x1,6]x0

=0

Answer 5

= 0 nha