(100+X)*2=300
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(100+X)*2=300(100+X)*2=300(100+X)*2=300(100+X)*2=300(100+X)*2/2=300/2100+X=150100+X-100=150-100X=50
(100+X)*2=300
(100+X)*2=300
(100+X)*2=300
(100+X)*2=300
(100+X)*2/2=300/2
100+X=150
100+X-100=150-100
X=50
3x+2(100-x )=300
x-2x+3x-4x+5x.+99x-100x=25求解
2x+3x+4x+5x+x+6x+7x=100
(X+X)+(X-X)+(X*X)+(X/X)=100
(100-2x)(50-2x)=3600 5000-200x-100x+4x(2)=3600 4x(2)-300x+1400=0(100-2x)(50-2x)=36005000-200x-100x+4x^2=36004x^2-300x+1400=0为什么不是5000-3600=200x+100x+4x^2=300x+100x+4x^2-1400=0
1/X(X+1)+1/(X+1)(X+2)+1/(X+2)(X+3).+1/(X+99)(X+100)=
解方程:2x+4x+6x...+100x=1-(x+3x+5x+...+99x)
1X+2X+3X…+98X+99X+100X=50500X X等于多少?
1x+2x+3x+4x+5x+6x+7x…+99x=100
100(X - 2) + 10X + 2X = 100*2X + 10X + X - 2 - 495
如何解 X*X+1.5X*1.5X+2X*2X=300
100×2x+10x+3x+216=100×3x+10×2x+x
设函数f(x)=(x-1)(x-2)...(x-100)(x>100),求F'(X)
f(x)=x(x-1)(x-2)…(x-99)(x-100),求f'(100)
解方程:x-2x+3x-4x+...+99x-100x=25
解方程:x-2x+3x-4x+.+99x-100x=25
x-2x+3x-4x+...+99x-100x=25
300字读后感 2篇 俄把格式说一下吧:《xxxx》(写题目)主要内容:x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x(写那篇文章的主要内容)思考分析:x x x