2·4(4·3-X)=6
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2·4(4·3-X)=6
2·4(4·3-X)=6
2·4(4·3-X)=6
两道初二数学计算题(1)x+6/x^2+2x+1-x+4/x^2+x=0(2)x+3/x÷x^2+3x/x-3·1/3-x
(x+2)(x-1)+(x+3)(x+1)=x·x-1 求x (5x-4)(2x+5)(3x-6)(2x-4)=(2x-4)(2x+5)·0.5 求x
ax已知x·x+3x-2=0,求2·x·x·x+6·x·x-4x的值.
x/(x+1)-x+3/(2x+4)·2x^2+4x/(x^2+6x+9)化简其中x=-2
y=x·x+x–6/x·x+4x+3的值域
化简:2x-6/4-4x+x²÷(x+3)·x(x+3)-2(3+x)/3-x
3x·x-5x-122x·x·x-x·x-4x+3x·x·x-6x-5x·x+6x+64x·x+12x+7
计算①x²-4/x²-4x+3÷x²+3x+2/x²-x②2x+6/4-4x+x²÷(x+3)·x²+x-6/3-x
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
*-----------------------------------------------*| 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 ||
2x-6/4-4x+x^2/(x+2)*x^2-4/3-x,其中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-
1).1/x²-3x+2 + 1/x²-5x+6 + 1/x²-4x+32).x-1/x²+3x+2 + 6/2+x-x² -(10-x)/4-x²3).(x+1-1/1-x)÷(x-x²/x-1)4).(x²-4/x²-x-6 +x+2/x-3)÷(x+1)/(x-3)5).x/x-y ·y²/x+y - x^4y/x^4-y^4
1/x(X+2)+1/x(x+2)(X+4)+1/(X+4)(x+6)+···+1/(x+2000)(x+2002)
2x+3x+4x+5x+x+6x+7x=100
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
计算:(1)x²-9/(x²+6x+9)·1/(2x-6) (2)x²-y²/(x+2y)÷x+y/(x²+2xy)(3)x²-2x+1/(x²+4x+4)÷(x-1)·x²+3x+2/(x-1)
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?