Question

[Nguyễn Phương Loan]

1 x 1 + 3 x 3 + 5 x 5 + 7 x 7 + 9 x 9 = ?

2 x 2 + 4 x 4 + 6 x 6 + 8 x 8 = ?

Answer 1

[Hoainguyrn Nguyen]

1+9+25+49+81=165

4+16+36+64=120

Answer 2

[nguyễn trung hiếu]

      1x1+3x3+5x5+7x7+9x9

=1+9+25+49+81

=165

      2x2+4x4+6x6+8x8

=4+16+36+64

=120