(1)X+2<6(2)2X+5<10(3)2分之X—3≥3分之2X—5(4)2分之2+X≥3分之2X—1 —2根据小烈条件邱正整数X
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计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
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
*-----------------------------------------------*| 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-
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
用列举法表示下列集合:1.{x|x6平方-7x+12-0} 2.{x|-2≤x≤5,x∈Z} 3.{X|X平方+1=0} 4.{x|x平方-5x+6=0 5.{x|x平方+2=0}2.解不等式:(1)|3x-4|<7 (2)|4x+6|>10
(3x+2)(3x-2)-5x(x-1)-(2x-1)²,其中√5<x<√10,且x为整数.
(3)x-3/2=1 (3)3(3x-3)<2(2x-5)9x-9<4x-109x-4x<-10+95x<-1x<-5分之1(4)2(2x-1)≤3x-44x-2≤3x-44x-3x≤-2x≤-2(5)2(5x+1)-12>3(x-5)10x+2>3x-15 10x-3x>-15-27x>-17x>-7分之119(6)2(2y+1)-3(2y-5)
已知3(5x+2)+5<4x-6(x+1),化简|x+1|-|x|
高中一元二次不等式求详解!(1)4x^2-1≥0 (2)x-x^2+6<0(3) x^2+x+3≥0 (4) x^2+x-6<0 (5) 2x^2+3x-6<3x^2+x-1 (6) -x^2-3x+10≥0
一元二次不等式1.解下列各一元二次不等式:(1)4x^2-1≥0 (2)x-x^2+6<0 (3)x^2+x+3≥0 (4)x^2+x-6<0 (5)2x^2+3x-6<3x^2+x-1 (6)-x^2-3x+10≥0
1.(1/X-1 )-2=X^-3X/X^-12.(X/X+1)^+5(X/X+1)+6=03.(8(X^+2X)/X^-1)+ 3(X^-1)/X^+2x
x/(x-2)-(1-x ² )/(x ² -5x+6)=(2-x)/(x-3) 解方程,急
高中一元二次不等式求详解急!(1)4x^2-≥0 (2) x-x^2+<0 (3) x^2+x+3≥0 (4) x^2+x-6<0 (5) 2x^2+3x-6<3x^2+x-1 (6) -x^2-3x+10≥0(1)4x^2-1≥0 (2)x-x^2+6<0
① x(x-3)<3x(x+2)-2x的平方-2x的平方-3 ②2(x的平方-2)-4x(1-x)≥16+6x(x-1)
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}
2x+3<9-x,x-4<3(x-2),2x-5>10-3x.2x+3<9-x,x-4<3(x-2),2x-5>10-3x.2x+1╱3+1<x.
求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X