Question

Tính nhanh

 126 x ( a x 1 - a : 1 ) x a x 26

Answer 1

126 x ( a - a ) x a x 26

126 x 0 x a x 26

0

Answer 2

126 x (a x 1 - a : 1) x a x 26

= 126 x 0 x a x 26

= 0

Answer 3

126 x ( a x ( 1-1) x a x 26

= 126 x a x 0 x a x 26

= 0 x 26 x a

= 0 x a

= 0

Answer 4

126 x ( a x 1 - a : 1 ) x a x 26

= 126 x 0 x a x 26 

= 0

Answer 5

= 126 x 0 x a x 26

= 0

Answer 6

126 x (a x 1 - a : 1) x a x 26

= 126 x 0 x a x 26

= 0

Answer 7

 = 0.

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