1 2 3 ... 41=( )X( )括号里填什么-搜答案-搜搜考试网

（2/7+1/4)*X(5/7+3/4)*X=15/41(15/28)(41/28)X*X=15/41X=28/41

是这样的：x^5+x^4=x^3(x^2+x)=(x^2+x)[(x^3-1)+1]=(x^2+x)(x^3-1)+x^2+x=[x(x+1)(x-1)](x^2+x+1)+x^2+x=(x^3-x)

x(1+2+...+9)=x(9-8-7-...-1)x=0记得采纳啊

7x+2=4x+117x-4x=11-23x=9x=9÷3x=34(8+3x)=3x+414×8+4×3x=3x+4132+12x=3x+4112x-3x=41-329x=9x=9÷9x=1挺简单的再

(x+3)(2x+5)-(2x+1)(x-8)=41(2x²+5x+6x+15)-(2x²-16x+x-8)=412x²+11x+15-2x²+15x+8=41

（X+X)+(X-X)+(X*X)+(X/X)=1002X+0+X*X+1=1002X+X*X=99X(X+2)=99X=9再问：请问X(X+2)=99解为什么就等于9了呢没看懂再答：换成算术法你就明

5x+3（9-x）=415x+27-3x=412x+27=412x=41-272x=14x=14/2x=75x+10(25-x）=1705x+250-10x=170250-170=10x-5x80=5

X+X+X+X+X+X+100X=1690106x=1690x=845/53

8(10-x)-5x=41

“李龙参加数学竞赛,共有10题,每做对一题加8分,错一题或不做倒扣5分,李龙最后得分41分,他做错了几道题”做错x题,共10题,做对10-x题,做对1题8分,做对题得分=8×(10-x)做错1题扣5分

设x1=4-√3,x2=4+√3,是方程X^2-8X+13=0的两根所以X1^2-8X1+15=2X^4-6X^3-2X^2+18X+23=(X+1)^2*(X^2-8X+13)+10=10所以原式=

INPUT "x=";x

当X=51a=51/10取整=5b=51/10取余=1X=10*1+5=15所以,运行结果为15

(x-22)+(x-24)+(x-27)+(x-20)=xx-22+x-24+x-27+x-20=x4x-93=x4x-x=933x=93x=31

(6x+1)(4x+1)(3x+1)(2x+1)=41x^2(6x+1)(2x+1)(4x+1)(3x+1)=41x^2(12x^2+8x+1)(12x^2+7x+1)=41x^2(12x^2+1)^

x/x平方-x+2=2x/x+1

x/x(x-1)+2=2x/(x+1)1/(x-1)+2=2x/(x+1)x+1+2(x-1)(x+1)=2x(x-1)x+1+2x²-2-2x²-2x=0-x-1=0-x=1x=

7x+2=4x+113x=9x=34（8+3x）=3x+4132+12x=3x+419x=9x=1

3X-35=X+413x-x=41+352x=76x=38

4.5X乘于6+14X=41

4.5x×6+14x=4127x+14x=41x=1

#includesintjiesheng(intn)//用于计算阶乘如：3!{if(n=1)rerunn;returnn*hh(n-1)}doubledigui(intn,intx)//用以计算y=x

x+x=x+15

2x等于x+15x等于15