4+14+24+34...+114=(
4+14+24+34...+114=(
4+14+24+.+114=
用简便方法计算:4+14+24+…+114
用简便方法计算:4+14+24+34+44+54+64+74+84+94+104+114+124+134=?
找规律-4,2,-10,14,-34.
简便4+14+24.+114过程
计算题4+14+24+34+......114=
数学运算符号“?”,使下列算式成立:2?4=10,5?3=18,3?5=14,9?7=34.求7?3的值.
4+14+24+34+44+54+64+74+84+94+104+114的间便方法是什么?请会的网友尽快回答我的问题!
1.-2,4,-8,16,-32.2.-4,8,-16,32,-64.3.-4,2,-10,14,-34.分别写出各组第
1:-2,4,-8,13,-32...2:-4,8,-16,32,-64.3:-4,2,-10,14,-34.找出各行规
下面有三组数 -2,4,-8,16,-32. -4,8,-16,32,-64. -4,2,-10,14,-34..