Question

1.tính bằng cách thuận tiện 

a).234 x 95 + 234 x 4 + 234 

b).(\(1+\frac{1}{2}\)) x (\(1+\frac{1}{3}\)) x (\(1+\frac{1}{4}\))

ai nhanh mk tick cho!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

a) 234 x 95 + 234 x 4 + 234 = 234 x ( 95 + 4 + 1 ) = 234 x 100 = 23400

Answer 2

a).234 x 95 + 234 x 4 + 234 

= 234 x ( 95 + 4 + 1 ) 

= 234 x 100

= 23400

b)  ( 1+1/2) x ( 1+1/3) x ( 1+1/4 )

= ( 2/2+1/2 ) x ( 3/3+1/3 ) x ( 4/4 + 1/4)

=3/2 + 4/3 + 5/4

= 18/12 + 16/12 + 20/12

= 54/12

= 9 /2

Answer 3

b) ( 1 + \(\frac{1}{2}\)) x ( 1 + \(\frac{1}{3}\) ) x ( 1 + \(\frac{1}{4}\) ) = \(\frac{3}{2}\) x \(\frac{4}{3}\) x \(\frac{5}{4}\) = \(\frac{5}{2}\)