计算题105^2-2*(100^2-5^5)+95^2

问题描述:

计算题105^2-2*(100^2-5^5)+95^2

105^2-2*(100^2-5^5)+95^2
=105^2-2*(100+5)(100-5)+95^2
=105^2-2*105*95+95^2
=(105-95)^2
=10^2
=100