3(x+2.5)=5x
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3(x+2.5)=5x3(x+2.5)=5x3(x+2.5)=5x3x+7.5=5x2x=7.5x=3.75∴原方程的解为x=3.75.求最佳.
3(x+2.5)=5x
3(x+2.5)=5x
3(x+2.5)=5x
3x+7.5=5x
2x=7.5
x=3.75
∴原方程的解为x=3.75.
求最佳.
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
3道简单的分式方程,1.3/(1-x^) = 2/(1+2x+x) - 5/1-2x+x^2.5x/(x^+x-6) + (2x-5)/(x^-x-12) = (7x-10)/(x^-6x+8)3.(x+1)/(x+2) + (x+6)/(x+7) = (x+2)/(x+3) + (x+5)/(x+6)
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
x-2x+3x-4x+5x.+99x-100x=25求解
2x+3x+4x+5x+x+6x+7x=100
x(x-2)-2x(x+1)-3x(x-5) 其中x=负½
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
(x+x+2.5)*(3/5)=75-(3/7)x
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
已知3x*x-x=1,求6x*x*x+7x*x-5x+2000
3x+5x=?x等于
3x+5x-6x=?
3x+5x=8x.
x^5-2x^3+x=?
8x(x-5)=3x
3(x+2.5)=5x