第1个回答 2009-08-05
57.6/18=3.2
75*16=16X+80
91+4X=127
3x-0.9=2.4
2X-2=4
x2-4=0
x2-7=0
x2-9=0
4y2=9
16x2-49=0
2x2-32=0
t2-45=0
(6x-1)2=5
(x+3)=2
(2x-5)2=5
(x+1)2-12=0
(x-5)2-36=0
3x2-x=15-x
x2-4x-3=0
2x2+3=7x
x2-6x+4=0
x2+5x-6=0
2t2-7t=0
3x2-1=6x
x2+6x+8=0
x2+4x-12=0
x2+10x=24
x2-8x+15=0
x2+2x-99=0
y2+5y+2=0
3x2-1=4x
x2+x-72=0
x2-5x+6=0
x2-0.5x-0.06=0
2x2=3-7x
y2-6y-6=0
x2-3x+2=0
2x2+7x=4
x2-2
2x2-mx-m2=0
2x2+5x-3=0
t2+2t=5
6x2-13x-5=o
2y2-4y-1=0
p(p-8)=16
0.3x2+x=0.8
x2+6x+8=o
x2+4x-12=0
x2-10x=-24
x2-8x+15=0
x2+2x-99=0
y2+5y+2=0
3x2-1=4x
x2+2x-2=0
3x2+4x-7=0
2y2+8y-1=0
3y2-2y=1
x(x+8)=16
(4y-3)(3y-1)=4
x2-2.4x-13=0
5x+2=3x2
3y2+1=2
x2+3=2 x
x2-3 x+2=0
x2-m(3x-2m+n)-n2=0
x2+x-1=0(精确到0.001)
x2+3x-5=0(精确到0.001)
x2-3x-10=0
(x+3)(x-1)=5
3x2-16x+5=0
3x(x+2)=5(x+2)
(3x+1)2-5=0
3(2x2-1)=7x
x2+7x+12=0
x2-10x+16=0
x2+3x-10=0
x2-6x-40=0
(x+1)(x+3)=15
(y-1)2+2y(y-1)=0
3x2-7x+2=0
2x2-11x-21=0
x2+7x+6=0
(3x+2)2=4(x-3)2
y2-17y+30=0
y2-7y-60=o
x2+10x-11=0
x2-12x-28=0
t(t+3)=28
6x2-31x+35=o
5x2+4x=o
6x2-13x-15=0
9(2x+3)2-4(2x-5)2=0
(2y+1)2+3(2y+1)+2=0
5m2x2-17mx+14=0(m 0)
10a2x2+13abx-3b2=0(a 0)
x2-3x+2=0
x2-3x-2=0
x2+12x+27=0
(x-1)(x+2)=7
(3-t)2+t2=9
(y-2)2=3
(2x+3)2=3(4x+3)
(2x-1)(x+3)=4
x3-1=(x-1)3
3x(x-1)=2-2x
x2+2a2=3ax
(a2-b2)x2-4abx=a2-b2
(b-c)x2+(c-a)x+(a-b)=o
3x2+4x-2=0
2x2+4x+35=0
4m(m-1)+1=0
2y2+5=6y
4p(p-1)-3=0
4(y2+0.09)=2.4y
3t2-2 t+2=0
x2+5=2 x
0.2x2-5= x
x2- x
x2- x+2=0