x-3除以x-2加上4除以x方减4等于2
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(8x+9)/(x^2+x-6)=a/(x+3)+b/(x-2)8x+9=a(x-2)+b(x+3)8x+9=(a+b)x+(3b-2a)建立方程组a+b=83b-2a=9得到解a=3b=5
13x-6/(x^2-4)=3(x-2)/(x+2)(x-2)=3/x+2……1x+2/x^2+4x+4=x+2/(x+2)^2=1/x+2……21/2=33-2=1
((x+2)/(x^2-2x)-(x-1)/(x^2-4x+4))/((x^2-16)/(x^2+4x))=((x+2)(x-2)-(x-1)x)/((x-2)^2*x)/((x-4)/x)=((x-
x^2-3x+1/x=2x^2-3x+1=2xx^2-5x+1=0两边乘xx-5+1/x=0x+1/x=5平方x^2+2+1/x^2=25x^2+1/x^2=23x^4+x^2+1/x^2=x^2+1
您好:2x除以5加上3x除以6等于180.4x+0.5x=180.9x=18x=18÷0.9x=20不明白,可以追问如有帮助,记得采纳,谢谢祝学习进步!
5x³-6x²+15x-28____________________x+2)5x⁴+4x³+3x²+2x+15x⁴+10x³_
x+1/x=3两边乘xx²+1=3x平方x^4+2x²+1=9x²两边减去x²x^4+x²+1=8x²所以x²/(x^4+x
(X+1)除以(x+2)加上(x+6)除以(x+7)等于(x+2)除以(x+3)加上(x+5)除以(x+6)[1-1/(x+2)]+[1-1/(x+7)]=[1-1/(x+3)]+[1-1/(x+6)
x/2>x/33x>2x3x-2x>0x>0
32÷3+x=0.7x=0.7-(3.2÷3)x≈0.7-1.07x=-0.37
你要求什么,题目完整吗
m=1-x(x≠1且-2)通分后推算
把每个式子因式分解x的方+5x+4=(x+1)(x+4)x方-5x+6=(x-2)(x-3)………………
我看下是不是这么解设y=x/(x^2-1)原方程可化为:2y^2-3/y=2(y≠0)=>2y^2-2y-3=0(y≠0)然后解出y=(1+根号7)/2或y=(1-根号7)/2这样解出来的答案太复杂了
x+5除以x+3加上x+11除以x+9等于x+7除以x+5加上x+9除以x+7即(x+5)/(x+3)+(x+11)/(x+9)=(x+7)/(x+5)+(x+9)/(x+7),分析后,可知分子=分母
化成小数0.25x+0.4x=1.30.65x=1.3x=1.3÷0.65x=2
=(x-4)/(x+1)(x-1)除以(x-4)(x+1)/(x+1)平方+1/(x-1)=(x-4)/(x+1)(x-1)乘以(x+1)平方/(x-4)(x+1)+1/(x-1)=(x-4)/(x+
[x(3-4X)+2X方(X-1)]除以(-2X)=(3x-4x²+2x³-2x²)÷﹙-2x)=(2x³-6x²+3x)÷﹙-2x)=-x²
2X方+3X-4=5除以2X方+3x2x^2+3x-4=5/(2x^2+3x)设y=2x^2+3x,那么,y-4=5/yy^2-4y-5=0(y-5)(y+1)=0y1=5y2=-12x^2+3x=5
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