问题
填空题
已知l2=1×1,22=2×2,32=3×3,…,如果l2+22+32+…+252=5525,那么22+42+62+…+502=______.
答案
22+42+62+…+502
=22(12+22+32+…+252)
=4×5525
=22100;
故答案为:22100.
已知l2=1×1,22=2×2,32=3×3,…,如果l2+22+32+…+252=5525,那么22+42+62+…+502=______.
22+42+62+…+502
=22(12+22+32+…+252)
=4×5525
=22100;
故答案为:22100.