Question

2³+4³+6³+8³+...+20³... Want photo of the soln

Answer 1

2^3+4^3+6^3+8^3...........20^3...

=2*2*2+4*4*4+6*6*6+8*8*8........20*20*20.

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

=8(1^3+2^3+3^3+4^3.........10^3.....)