1+2+4+8+16+.+256+512=_____
一元二次方程解法有(1)_____(2)_____(3)_____(4)_____(5)_____
-1,2-3,4,-5_______,________ 1,4,9,16,25_____,_____ 0,3,8,15,
1、keep healthy=_____ _____ _____ _____
找规律 1,3,5,7,9,_____,...,_____,... 1,4,9,16,25,____,...,_____
5x-2=3x+4 两边_____,根据_____得_____=3x+6.两边_____,根据_____得2x=____
关于分数的题目咋做?1、11/25化为带分数是_____.2、5又1/2的倒数是_____.3、5/8÷4=_____.
A.1 2 3 3 4 5 _____ B.6 7 2 2 8 _____ C.7 2 10 _____ D.11 7
1+2+3+4+5+6.+99=(_____)^2
(+1)+(-2)+(+3)+(-4)+……+(+99)+(-100)=_____
____%=__分之9=16分之___=_____=1:8=____除以_____
1.仿词.例:自信力--他信力,先发制人--后发制人 (1)_____,(2)_____ (3)_____,(4)___
方程x2+2x+1=0的根为x1=_____,x2=_____,x1+x2=_____,x1乘x2=_____