3.14的平方加68.6乘1.314 简便计算
3.14的平方加68.6乘1.314 简便计算
3.14²+68.6×1.314
=3.14²+68.6×(1+0.314)
=3.14²+68.6×1+68.6×0.314
=68.6+3.14²+6.86×3.14
=68.6+3.14×(3.14+6.86)
=68.6+3.14×10
=68.6+31.4
=100
用简便计算3.14*3.14+68.6*1.314
3.14*3.14+68.6*1.314
=3.14*3.14+68.6*(1+0.314)
=3.14*3.14+68.6*1+6.86*3.14
=3.14*(3.14+6.86)+68.6
=3.14*10+68.6
=31.4+68.6
=100
简便运算:3.14平方+68.6*1.314
3.14^2+68.6*1.314
=3.14^2+68.6*(1+0.314)
=3.14^2+68.6+68.6*0.314
=3.14^2+68.6+6.86*3.14
=3.14*(3.14+6.86)+68.6
=3.14*10+68.6
=31.4+68.6
=100
简便计算 56的平方加44的平方加56乘88的积=?要过程 简便计算啊
56^2+44^2+56*88=56^2+2*56*44+44^2=(56+44)^2=100^2=10000(平方和公式)
3.14平方十68.6x1.314的简便方式
3.14×3.14+68.6×(1+0.314)简便方式
=3.14×3.14+6.86×3.14+68.6
=3.14×(3.14+6.86)+68.6
=3.14×10+68.6
=31.4+68.6
=100
简便计算:3.14乘55的平方减3.14乘45的平方
上式=3.14*(55^2-45^2)
=3.14(55-45)(55+45)=3140
0.125的平方加2乘0.125乘0.875加0.875的平方(简便计算)
0.125^2+2*0.125*0.875+0.875^2
=(0.125+0.875)^2
=1^2
=1
89的平方加2乘89乘11加121简便计算
89的平方加2乘89乘11加121简便计算
89的平方加2乘89乘11加121
=89^2+2*89*11+11^2
=(89+11)^2
=100^2
=10000
3.14乘3.14+68.6乘1.314 计算
100
201的平方减51的平方加253乘851 简便计算
201² -51² + 253 × 851
=(201+51)×(201-51)+253 × 851
=252×150+253 × 851
=252×150+(252+1 )× 851
=252×150+252×851+851
=252×(150+851)+851
=252252+851
=253103