试题与答案

比较下面算式结果的大小(在横线上选填“>”“

题型:解答题

题目:

比较下面算式结果的大小(在横线上选填“>”“<”“=”)

42+32______2×4×3;

(-2)2+12______2×(-2)×1;

62+72______2×6×7;

22+22______2×2×2。

通过观察、归纳,写出能反映这种规律的一般结论,并加以证明。

答案:

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