Question

Tính nhanh : A = 3 x 2012 + 9 x 2012 + 20 x 2012 + 28 x 2012 + 38 x 2012 + 2012 + 2012 = ? 
 

Answer 1

A = ( 3 + 9 + 20 + 28 + 38 + 1 + 1 ) x 2012

A = 100 x 2012

A = 201200

Answer 2

 A = 3 x 2012 + 9 x 2012 + 20 x 2012 + 28 x 2012 + 38 x 2012 + 2012 + 2012 

A = 2012 x ( 3 + 9 + 20 + 28 + 38 + 1 + 1 )

A = 2012 x 100

A = 201200

Answer 3

Cảm ơn ạ .

Answer 4

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