请先观察下列算式,再填空3^2-1^2=8*1,5^2-5^3=8*2.①7^2-5^2=8*____;②9^2-( )
请先观察下列算式,再填空
3^2-1^2=8*1,5^2-5^3=8*2.
①7^2-5^2=8*____;
②9^2-( )^2=8*4;
③( )^2-9^2=8*5;
④13^2-( )^2=8*__;
…
通过观察归纳,写出反映这中规律的一般结论:
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