\(=1\)

=1 tk m nhé

\(\frac{1234\times567-667}{567+1234\times566}=\frac{1234\times\left(566+1\right)-667}{567+1234\times566}=\frac{1234\times566+1234-667}{567+1234\times566}\)

\(=\frac{1234\times566+567}{567+1234\times566}=1\)

=1

a.\(\frac{327.412+400}{328.412-12}=\frac{327.412+400}{\left(327+1\right).412-12}=\frac{327.412+400}{327.412+412-12}=\frac{327.412+400}{327.412+400}=1\)

b.\(\frac{1234.567-667}{1234.566+567}=\frac{1234.\left(566+1\right)-667}{1234.566+567}=\frac{1234.566+1234-667}{1234.566+567}=\frac{1234.566+567}{1234.566+567}=1\)

A=36 x 350 + 1,2 x 20 x 3 + 9 x 4 x 4,5

= 12600  + 72 + 162

= 12834

1 a/ B = 2016 . 2016 - 2014 . 2018

           =\(2016^2-\left(2016-2\right).\left(2016+2\right)\)

           = \(2016^2-2016.\left(-2+2\right)\\\)

           =\(2016^2-2016.0 \)

           = \(2016^2\)

1: Tính
a) B = 2016 x 2016 - 2014 x 2018
       = (2016 x 2016) - (2014 x 2018)
       =  4064256 - 4064252
       = 4
       b) 327 x 412 + 400 / 328 x 412 -12
          = (327 x 412 + 400) / ( 328 x 412 - 12)
           = 135124 / 135124
           = 1

c) ( 1234 x 567 - 667 ) : ( 567 + 1234 x 5)
   = (1234 x 567 - 667) : (567 + 1234 x 566) 
= [1234 x 566 + (1234 - 667)] / (1234 x 566 + 567) 
= (1234 x 566 + 567) / (1234 x 566 + 567)
= 1
để thiếu bạn ơi
 

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