27-5÷x=3÷2x+1
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27-5÷x=3÷2x+127-5÷x=3÷2x+127-5÷x=3÷2x+125-5/x=3/2x+125-10/2x=3/2x+125-1=3/2x+10/2x24=13/2x2x=24/13x=
27-5÷x=3÷2x+1
27-5÷x=3÷2x+1
27-5÷x=3÷2x+1
25-5/x=3/2x+1
25-10/2x=3/2x+1
25-1=3/2x+10/2x
24=13/2x
2x=24/13
x=12/13
已知x²+4x-1=0,求2x四次方﹢8x³-4x²-8x+1一已知x²-5x+1=0,求x²-x+1÷x²-1÷x的值二已知x=√5-1,求x四次方+3x²-2x²-4x-2之值
X×X-3X+1=0求分式X×X÷〈X×X×X×X+3X×X+1〉
几道初中数学题..要有过程 注:x^2 表示x的2次方1.化简:(9x^2+3x)/(x^2+6x+9) * (x^3+27)/(x^2-3x) ÷ (x^2-3x+9)/(x^2-9)2.化简x - x÷{(x^2-y^2)/(x^3+y^3) * [(x-(x^2+y^2)/y ) ÷ (1/x - 1/y)3.化简分式: (x^3 + 5x^2 + 3x - 9)/(x^3
已知x²-3x+1=0,求式子(x+1+x-1分之2)÷x-1分之x的值.
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6.8+12÷x=10.8,14-0.5(x+3)=7.8,3.5x-3x-10=8,7.9-5x=7.8÷210x-20=6x,10+6x=8x,2(x+54)=8x,25-2x=5+2x
填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
已知一元二次方程x²+3x-1=0的一个实数根,求x-3/3x²-6x÷(x+2-5/x-2)的值
(x^-3x+2/x^-5x+6)^2÷(x-1/x^2-2x-3)^2
[x^2+2x-8/x^3+2x^2+x]÷[(x-2/x)×(x+4/x+1)]化简[x^2+2x-8/x^3+2x^2+x]÷[(x-2/x)×(x+4/x+1)]化简
27-5/x=3/2x+1
化简!求过程!x-1/x-2÷(x+1-x-1/3)
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
27-5÷x=3÷2x+1
3x²-(2x+5x-1),其中x=10
(1)x÷x=x x= (2)x2=2x x= (3(1)x÷x=x x=(2)x2=2x x=(3)x=x-x x=
1.(x^3-x^2-4x+1)/(x^2-3x+2)-(x^3-2x^2-9x+21)/(x^2-5x+6)+(x^2-3x+8)/(x^2-4x+3)2.{(x^2)/(x-y)}*{y/(x+y)}-{(x^4y)/(x^4-y^4)}÷{(x^2/x^2+y^2)^2}
(2/3x-2/x+y(x+y/3x-x-y))÷x-y/x,其中5x+3y=0