Question

so sanh cac tong sau : (1+2+3+4).(1+2+3+4)va1.1.1+2.2.2+3.3.3+4.4.4

Answer 1

(1+2+3+4)(1+2+3+4)=(1+2+3+4)²

 

1.1.1+2.2.2+3.3.3+4.4.4

=1³+2³+3³+4³

=(1+2+3+4)³

 

=> (1+2+3+4).(1+2+3+4) < 1.1.1+2.2.2+3.3.3+4.4.4

Answer 2

( 1 + 2 + 3 + 4)( 1 + 2 + 3 + 4) = 10 . 10 = 100

1.1.1 + 2.2.2 + 3.3.3 + 4.4.4 = 1 + 8 + 27 + 64  = 100 

VẬy (1 +  2 + 3 + 4)(1 + 2 + 3 + 4) = 1.1.1 + 2.2.2 + 3.3.3 + 4.4.4