(x/4)^2 + ((20-x)/x)^2 =12 怎么算得x^2-20x+104=0

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(x/4)^2 + ((20-x)/x)^2 =12 怎么算得x^2-20x+104=0
(x/4)^2 + ((20-x)/x)^2 =12 怎么算得x^2-20x+104=0

(x/4)^2 + ((20-x)/x)^2 =12 怎么算得x^2-20x+104=0
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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 *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 解九宫格题目(X为未知数)9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1 通分:x+4/x^2-8x+15,x-5/x^2+x-12,x-3/x^2-x-20 因式分解:(x+1)(x+2)(2x+3)(x+6)-20x^4 麻烦解4道分式方程(20分)(x/2x-5)+(5/5-2x)=1(x+1/x*x-2x)-(1/x)=3/x-2(1-x/5-x)-(5-x/1-x)=8/x*x-6x+5(x+1/x-1)-(4/x*x-1)=1去掉括号,不管前面正负,都不变号~ 3x/(x-2)-x/(x+2)÷2x/(x-4)化简3x/(x-2)-x/(x+2)÷2x/(x²-4)化简 (x/x-2-x/x+2)/4x/x-2 (x^2+4x)^2-x^2-4x-20 X+X+2+X+4-(X+4)=26 (16x^4+4x^2+x)/x=? (x^2-4x)/x^2-8x+16 (x-4/x)× x/x-2 等于? (x-1)^3(x+1)(x-2)/(x+4) (x+2)(x-2)+16 (x-1)(x-2)+3x(x+3)-4(x+2)(x-3)(x+2)(x-2)+16 (x-1)(x-2)+3x(x+3)-4(x+2)(x-3) 1/(1-x)+1/(1+x)+2/(1+x*x)+4/(1+x*x*x*x)+8/(1-x*x*x*x*x*x*x*x)怎么做 已知x-x/4=6.求代数式x平方-14x+4/2x平方-20x除(1-x-2-x/12)的值 已知x-4/x=6,求代数式2x²-20x/x²-14x+4除(1-x-12/2-x)的值