369-e.net
当前位置:首页>>关于560 28x5 简便运算的资料>>

560 28x5 简便运算

(x+5)=560/28x+5=20x=15

560/5/7=560/7/5=80/5=16

47x5+25x5+28x5=(47+25+28)x5=100x5=500

560÷[(42-26)X5]=560÷(42X5-26X5)=560÷(210-130)=560÷80=7

57x28一28x5= (57-5)*28= 52*28= 50*28+2*28=1400+56= 1456

560+14-30*5=560-30*5+14=560-150+14=410+14=424

28x55十55x72=55*(28+72)=55*100=5500

5.28x44+528x56=5.28x(4.4+5.6)=5.28x10=52.8回答完毕~ 有疑问请追问~无疑问请点击【采纳】~ 祝学习进步\(^o^)/.

x(x-5)=20x^2-5x-20=0△=5^2-4*(-20)=105x1=(5+√105)/2x2=(5-√105)/2

简算:28X5一12X5=(28-12)*5=16*5=80

lzth.net | mdsk.net | rtmj.net | 369-e.net | skcj.net | 网站首页 | 网站地图
All rights reserved Powered by www.369-e.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com