9.5²+9.5+0.25(用简便方法计算)
问题描述:
9.5²+9.5+0.25(用简便方法计算)
答
9.5^2+9.5+0.25
=9.5^2+2*0.5*9.5+0.5^2
=(9.5+0.5)^2
=10^2
=100