计算:9999*9999+19999====

来源：学生作业帮助网编辑：六六作业网时间：2024/12/18 22:13:18

计算:9999*9999+19999=__=__=__=__计算:9999*9999+19999=__=__=__=__计算:9999*9999+19999=__=__=__=__9999*9999+

计算:9999*9999+19999=__=__=__=__
计算:9999*9999+19999=__=__=__=__

计算:9999*9999+19999=__=__=__=__
9999*9999+19999=9999*9999+19998+1=9999*9999+9999*2+1=(9999+1)^2=100000000(10^8)

9999^2+2*9999*1+1^2=(9999+1)^2=10^8