Question

Tính nhanh : (21+12-3+44+55)x(2x6-4x3)

Answer 1

= ( 21 + 12 - 3 + 44 + 55 ) x 0 

= 0 

Answer 2

( 21 + 12 - 3 + 44 + 55) x ( 2 x 6 -4x3) = (21+12-3+44+55)x( 12-12)

=(21+12-3+44+55)x0 = 0

 

Answer 3

đúng

 

Answer 4

=0 :)

Answer 5

21+12-3=30

30+44+55=129

129x[2x6]=141

(141-4x3)=139