问题
填空题
(32-22)2+(42-32)2+(52-42)2+(62-52)2=______.
答案
原式=[(3-2)(3+2)]2+[(4-3)(4+3)]2+[(5-4)(5+4)]2+[(6-5)(6+5)]2,
=52+72+92+112,
=276.
故本题答案为276.
(32-22)2+(42-32)2+(52-42)2+(62-52)2=______.
原式=[(3-2)(3+2)]2+[(4-3)(4+3)]2+[(5-4)(5+4)]2+[(6-5)(6+5)]2,
=52+72+92+112,
=276.
故本题答案为276.