Question

1³ + 2³ + 3³ + ... + 20³

Answer 1

=(1+20)^3

=21^3

=9261

nha

Answer 2

bấm máy tính

Answer 3

\(1^3+2^3+3^3+.......+20^3\)

=\(\left(1+2+3+....+20\right)^3\)

=  \(210^3\)

=\(9261000\)

Answer 4

1³ + 2³ + 3³ + ... + 20³

= ( 1 + 2 + 3 + ... + 20 )³

= 210³

= 9261000