Question

4.Tính nhanh:

(71,2 x 28,8 + 28,8 x 28,2) x (134 x 1,1 - 134 x 0,1 - 134)

Answer 1

=28,8x(71,2+28,2)x134x(1,1-0,1-1)
= ...........................x134x0
=..............x0
=0