(-a+1/5)(-a-1/5)=________ (-a-5)(_________ )=25-a^2 100/99*101+1=________1 (-a+1/5)(-a-1/5)=________2 (-a-5)(_________ )=25-a^23 100/99*101+1=________4 (x^4+1)(x^2+1)(x+1)(x-1)=____________
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![(-a+1/5)(-a-1/5)=________ (-a-5)(_________ )=25-a^2 100/99*101+1=________1 (-a+1/5)(-a-1/5)=________2 (-a-5)(_________ )=25-a^23 100/99*101+1=________4 (x^4+1)(x^2+1)(x+1)(x-1)=____________](/uploads/image/z/401642-26-2.jpg?t=%28-a%2B1%2F5%29%28-a-1%2F5%29%3D________+%28-a-5%29%28_________+%29%3D25-a%5E2+100%2F99%2A101%2B1%3D________1+%28-a%2B1%2F5%29%28-a-1%2F5%29%3D________2+%28-a-5%29%28_________+%29%3D25-a%5E23+100%2F99%2A101%2B1%3D________4+%28x%5E4%2B1%29%28x%5E2%2B1%29%28x%2B1%29%28x-1%29%3D____________)
(-a+1/5)(-a-1/5)=________ (-a-5)(_________ )=25-a^2 100/99*101+1=________1 (-a+1/5)(-a-1/5)=________2 (-a-5)(_________ )=25-a^23 100/99*101+1=________4 (x^4+1)(x^2+1)(x+1)(x-1)=____________
(-a+1/5)(-a-1/5)=________ (-a-5)(_________ )=25-a^2 100/99*101+1=________
1 (-a+1/5)(-a-1/5)=________
2 (-a-5)(_________ )=25-a^2
3 100/99*101+1=________
4 (x^4+1)(x^2+1)(x+1)(x-1)=____________
(-a+1/5)(-a-1/5)=________ (-a-5)(_________ )=25-a^2 100/99*101+1=________1 (-a+1/5)(-a-1/5)=________2 (-a-5)(_________ )=25-a^23 100/99*101+1=________4 (x^4+1)(x^2+1)(x+1)(x-1)=____________
1 (-a+1/5)(-a-1/5)=(-a)^2-(1/5)^2=a^2-1/25
2.(-a-5)(_a-5_ )=25-a^2
3 100/99*101+1=_100÷[(100-1)(100+1)+1]=100÷100^2=1/100.
4 (x^4+1)(x^2+1)(x+1)(x-1)
=(X^2+1)(X^2+1)(X^2-1)
=(X^4+1)(X^4-1)
=X^8-1.