简便运算0.370.37+20.630.37+0.630.63

来源：学生作业学帮网编辑：学帮网时间：2024/05/15 09:54:35

简便运算0.37*0.37+2*0.63*0.37+0.63*0.63

0.37*0.37+2*0.63*0.37+0.63*0.63
=(0.37*0.37+0.63*0.37)+(0.63*0.37+0.63*0.63)
=0.37*(0.37+0.63)+0.63*(0.37+0.63)
=0.37*1+0.63*1
=1

0.37*0.37+2*0.63*0.37+0.63*0.63=0.37*0.37+0.63*0.37+0.63*0.37+0.63*0.63
=0.37*(0.37+0.63)+0.63*(0.37+0.63)=0.37+0.63=1

=(0.37+0.63)²
=1

＝﹙0.37＋0.63﹚²＝1

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