(x-2)/(x+2)-16/(x^2-4)=(x+2)/(x-2)
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(x-2)/(x+2)-16/(x^2-4)=(x+2)/(x-2)
(x-2)/(x+2)-16/(x^2-4)=(x+2)/(x-2)
(x-2)/(x+2)-16/(x^2-4)=(x+2)/(x-2)
可能无解,左右通分约去分母,条件是x不等于2或-2
剩下分子相等(x-2)^2-16=(x+2)^2
解出x=-2,所以无解
两边同乘以(x^2-4),得到(x-2)^2-16=(x+2)^2
解出x=-2,因为x=-2使(x^2-4)=0,所以是曾根,所以无解
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
(x^2-4x)/x^2-8x+16
(16x^4+4x^2+x)/x=?
(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)
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
请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360
35道.符号^代表平方.读起来就是(X的平方).1,x^-x-202,x^-9x+203,x^-9x-204,x^+9x+205,x^-18x+326,x^+14x-317,x^+18x+328,x^+14x-329,x^+19x+4810,x^+47x-4811,x^+13x-4812,x^+2x-4813,x^+26x+4814,x^-22x-4815,x^+17x+7216,x^+21x-10017,x^-x-7218,x
X-2-(x²/ x+2)
因式分解x(x+2)-x
3x/(x-2)-x/(x+2)÷2x/(x-4)化简3x/(x-2)-x/(x+2)÷2x/(x²-4)化简
通分:(1)2/x^2+x-2,1/x^2-2x-8(2)x/x^2-3x-4,1/x^2-8x+16
(x-2)/(x+2)-16/(x^2-4)=(x+2)/(x-2)
先化简.在求值:(x+2/x²-2x-x-1/x²-4x+4)÷x²-16/x²+4x
(x^2-16/x^2+8x+16) + (x/x-4)
2x:16-2x=2.5x:20-2.5x x=爱克斯(未知数)
(x/x-2)-2=3(x-2)/x
因式分解(x+x)-(x+x)-2
x(x+2)+x(x-3)