(x^ - 4x+3)(x^+12x+35)+15 .指数为二.^是指数.
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3x·x-5x-122x·x·x-x·x-4x+3x·x·x-6x-5x·x+6x+64x·x+12x+7
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
解下列方程!就三道!解下列方程.1、x/x-2 - 1-x²/x²-5x = 2x/x-3(x/x-2 - 1-x²不是一起的!)2、5x/x²+x-6 - 5-2x/x²-x-12=7x-10/x²-6x+8(5x/x²+x-6 - 5-2x不是一起的!)3、x-4/x-5 + x-8/x-9=x-7/x-
通分:x+4/x^2-8x+15,x-5/x^2+x-12,x-3/x^2-x-20
2x-6/(4-4x+x^2)*(x^2+x-6)/(12-4x)/(x+3)
3x/(x-2)-x/(x+2)÷2x/(x-4)化简3x/(x-2)-x/(x+2)÷2x/(x²-4)化简
先化简,再求值:[(4x^2+12x)/(x^2+x-6)/[(x-2)/(x+2)-(x+2)/(x-2)]其中x-3(2/1)
(X²+4x+8)²+3x(x²+4x+8)+2x²因式分解 (X²+4x+8)²+3x(x²+4x+8)+2x²(2x²-3x+1)²-22x²+33x-1(x²+x+1)(x²+x+2)-12(6x-1)(2x-1)(3x-1)(x-1)+x²ab(a+b)²-(a+b)²+1x²+xy-6y
4x+2x+x-3x=12
3x-{-4x+{5x-(12x-10]+2}
(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+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12=97.8x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12=97.8 好多年没有用过过数学公式了 想不起来怎么算了 想知道 X值是多少
(x+1)(x+2)(x+3)(x+4)+1(x+1)(x-2)(x+3)(x-4)+25
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4