0.222²-1.222²=;67²+66×6+33²

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/06 23:06:41
0.222²-1.222²=;67²+66×6+33²

0.222²-1.222²=;67²+66×6+33²
0.222²-1.222²=;67²+66×6+33²

0.222²-1.222²=;67²+66×6+33²
0.222²-1.222²
=(0.222-1.222)(0.222+1.222)
=-1×1.444
=-1.444

67²+66×67+33²
=67²+2×33×67+33²
=(67+33)²
=100²
=10000