x2+3x-4≥0

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已知x2-4x+1=0,求x2/(x2)2-3x2+1

已知x2-4x+1=0,求x2/(x2)2-3x2+1已知x2-4x+1=0,求x2/(x2)2-3x2+1已知x2-4x+1=0,求x2/(x2)2-3x2+1x2-4x+1=0两边同除以xx-4+

解不等式,这里有几个不等式,4x2+4x+1≥0;-4+x-x2<0;3x2-x-4>0;x2-x-12≤0;x2+3x-4>0;3x2-2x+1<0;16-8x+x2≤0;3x2-4<0;x后的2都是平方,

解不等式,这里有几个不等式,4x2+4x+1≥0;-4+x-x2<0;3x2-x-4>0;x2-x-12≤0;x2+3x-4>0;3x2-2x+1<0;16-8x+x2≤0;3x2-4<0;x后的2都

几道数学题,解不等式X2-4X-5≤0-2X2+3X-2<0-X2+8X-3>04X2-18X+81/4>01/2X2-3X+5<03X2-2X+1<0X2+2X-3≤0X-X2+6<04X2+4X+1≥0-4+X-X2<03X2-4<02X-X2≥-14-X2≤0(X-A)(X-2)<0

几道数学题,解不等式X2-4X-5≤0-2X2+3X-2<0-X2+8X-3>04X2-18X+81/4>01/2X2-3X+5<03X2-2X+1<0X2+2X-3≤0X-X2+6<04X2+4X+

约分 1-x2/x2-3x-4

约分1-x2/x2-3x-4约分1-x2/x2-3x-4约分1-x2/x2-3x-41-x2=(1-x)(1+x)x2-3x-4=(x+1)(x-4)共同约去(x+1)即可

x2-3x+1=0 x2/(x4-x2+1)

x2-3x+1=0x2/(x4-x2+1)x2-3x+1=0x2/(x4-x2+1)x2-3x+1=0x2/(x4-x2+1)请问这是什么啊?希望能把问题完善了好吧?

已知x2 3x-2=0,求2x-4╱x2 6x 9÷(x-3)×x2-9╱2x-x2的值

已知x23x-2=0,求2x-4╱x26x9÷(x-3)×x2-9╱2x-x2的值已知x23x-2=0,求2x-4╱x26x9÷(x-3)×x2-9╱2x-x2的值已知x23x-2=0,求2x-4╱x

x2-3x-1=0,求①x2 1/x2;②x2-1/x2

x2-3x-1=0,求①x21/x2;②x2-1/x2x2-3x-1=0,求①x21/x2;②x2-1/x2x2-3x-1=0,求①x21/x2;②x2-1/x2∵x2-3x-1=0∴X-2-1/X=

设方程x2+3x-4=0的两个根x1,x2则x1+x2= ,x1×x2=

设方程x2+3x-4=0的两个根x1,x2则x1+x2=,x1×x2=设方程x2+3x-4=0的两个根x1,x2则x1+x2=,x1×x2=设方程x2+3x-4=0的两个根x1,x2则x1+x2=,x

13-4x2≥0 x2-6x+4≥0 (x-1)(2-x)≥0 x(1-x)>x(2x-3)+1 -6x2-x+1≤0

13-4x2≥0x2-6x+4≥0(x-1)(2-x)≥0x(1-x)>x(2x-3)+1-6x2-x+1≤013-4x2≥0x2-6x+4≥0(x-1)(2-x)≥0x(1-x)>x(2x-3)+1

x2-6x+4≥0

x2-6x+4≥0x2-6x+4≥0x2-6x+4≥0x2-6x+4≥0x²-6x≥-4(x-3)²≥-4+9(x-3)²≥5|x-3|≥√5x-3≥5或x-3≤-√5x

x2+x-6=0 x2-根号3x-二分之一=0 4x2-6x=0

x2+x-6=0x2-根号3x-二分之一=04x2-6x=0x2+x-6=0x2-根号3x-二分之一=04x2-6x=0x2+x-6=0x2-根号3x-二分之一=04x2-6x=0x2+x-6=0,(

若X2-X-2=0,则X2-X+1/(X2-X)2-4+根号3为多少

若X2-X-2=0,则X2-X+1/(X2-X)2-4+根号3为多少若X2-X-2=0,则X2-X+1/(X2-X)2-4+根号3为多少若X2-X-2=0,则X2-X+1/(X2-X)2-4+根号3为

3x2+2x-1≥0 x2-3x-10>0 4x2-11x-3<0 -x2+3x+10>0 4个不等式求解

3x2+2x-1≥0x2-3x-10>04x2-11x-3<0-x2+3x+10>04个不等式求解3x2+2x-1≥0x2-3x-10>04x2-11x-3<0-x2+3x+10>04个不等式求解3x

(1)x2+x-6≥0 (2)-x2+2x+3>0 (3)x2+4x+4>0(1)x2+x-6≥0(2)-x2+2x+3>0(3)x2+4x+4>02.不等式ax²+bx+2>0的解集为{x|-½

(1)x2+x-6≥0(2)-x2+2x+3>0(3)x2+4x+4>0(1)x2+x-6≥0(2)-x2+2x+3>0(3)x2+4x+4>02.不等式ax²+bx+2>0的解集为{x|-

方程X2+3X-4=0

方程X2+3X-4=0方程X2+3X-4=0方程X2+3X-4=0X2+3X-4=0(x+4)(x-1)=0x1=-4,x2=1分解因式(x+4)(x-1)=0解得x=-4或x=1(X+4)(X-1)

x2+3x-4=0

x2+3x-4=0x2+3x-4=0x2+3x-4=0原式(x-1)(x+4)=0x=1或x=-45x=4x=5/4

解下列不等式3x2-x-4大于0,x2-x-12小于等于0,x2+3x-4大于0,16-8x+x2小于等于0

解下列不等式3x2-x-4大于0,x2-x-12小于等于0,x2+3x-4大于0,16-8x+x2小于等于0解下列不等式3x2-x-4大于0,x2-x-12小于等于0,x2+3x-4大于0,16-8x

解不等式(1)-2x2+4x-3>0(2)x2-2x+1-a2≥0

解不等式(1)-2x2+4x-3>0(2)x2-2x+1-a2≥0解不等式(1)-2x2+4x-3>0(2)x2-2x+1-a2≥0解不等式(1)-2x2+4x-3>0(2)x2-2x+1-a2≥0(

解一元二次不等式⑴3X2<P ⑵2X2>4⑶2X2+3X+1≥0 ⑷X2+3X+2≤0 ⑸X2-2X+3>0 抱歉,第一题应该是3X2<9 PS:X2都为X的平方

解一元二次不等式⑴3X2<P⑵2X2>4⑶2X2+3X+1≥0⑷X2+3X+2≤0⑸X2-2X+3>0抱歉,第一题应该是3X2<9PS:X2都为X的平方解一元二次不等式⑴3X2<P⑵2X2>4⑶2X2

5x2—[x2+(4x—x2)—2(x2—3x)]

5x2—[x2+(4x—x2)—2(x2—3x)]5x2—[x2+(4x—x2)—2(x2—3x)]5x2—[x2+(4x—x2)—2(x2—3x)]原式=5x²-x²-(4x-x