4x2-27x+18>0 x2-6x+4
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4x2-27x+18>0x2-6x+44x2-27x+18>0x2-6x+44x2-27x+18>0x2-6x+4(4x-3)(x-6)>0∴x>6或x4x²-27x+18>0(4x-3)(
4x2-27x+18>0 x2-6x+4
4x2-27x+18>0 x2-6x+4
4x2-27x+18>0 x2-6x+4
(4x-3)(x-6)>0
∴x>6或x
4x²-27x+18>0
(4x-3)(x-6)>0
∴x>6或x<3/4
x²-6x+4<0
x²-6x+9<5
(x-3)²<5
-√5
x大于2吧!
4x2-27x+18>0 x2-6x+4
解一元二次不等式组 4x2-27x+18>0 x2-6x+8
解下列不等式组 4x2-27x+18>0 x2+4x+4>0
(x2-x)(x2-x-4)+4因式分解
计算:x2-5x+6/x2-4x+3 + x2-4x+3/x2-2x+1 + x2-3x-4/1-x2
4x2-4x+1=x2+6x+9
(x2+6x)(x2+6x+4)-45
(x2+5x-4)(x2+5x+6)-120 因式分解
(x2+2x-3)(x2+2x+4)+6因式分解
已知x2 3x-2=0,求2x-4╱x2 6x 9÷(x-3)×x2-9╱2x-x2的值
因式分解x2-4x-6
已知x2-4x+1=0,求x2/(x2)2-3x2+1
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
x2+x-6=0 x2-根号3x-二分之一=0 4x2-6x=0
解方程4x2-4x+1=x2+6x+9 7x2-√6x-5=0
x2-4x+1=0,则x+1/x=?x2+1/x2=?
x2-6x+4≥0
x2-4x+4