[(240-48)/x]+[48/(x-10)]=240//(x-4)

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[(240-48)/x]+[48/(x-10)]=240//(x-4)
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[(240-48)/x]+[48/(x-10)]=240//(x-4)
[192(x-10)+48x]/x(x-10)=240/(x-4)
240x(x-10)=(x-4)(240x-1920)
x(x-10)=(x-4)(x-8)
x²-10x=x²-12x+32
2x=32
x=16

30%x=240 x /5 +x=48 90%-35%x=16.5 x+120% 解方程 100分x^3(2x-5)(x+1)+(5x+2)(x-1)=0x^2/3+48/x^2=10(x/3-4/x)√x-1 解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1 （X-2）X（X+4）=48 4X+2(20-X)=48 y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1 设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10), x-4/x-6+x-8/x-10=x-5/x-7+x-7/x-9 1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550 解方程6X+4(10-x)=48 1x()+2x()+3x()+4x()+5x()+6x()+7x()+8x()加9x()+10x()=1980 1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少