

giải phương trình
1, 6x−1+9x2−1=6x−9x2
2, 3x−2+x+1=3
3, (x+9+3)(x+1+2x−7)=8x
4, x+1+2xx+3=2x+x2+4x+3
5, x3−32.x2+3x+2=0
6, x2+x+70−2x+22=2x2−12x−14
7, x2+x+x−x2=x+1
8, 3x−5+7−3x=5x2−20x+22
9, 3x2+6x+12+5x4−10x2+9=3−4x−2x2
Help me !
1, 6x−1+9x2−1=6x−9x2
2, 3x−2+x+1=3
3, (x+9+3)(x+1+2x−7)=8x
4, x+1+2xx+3=2x+x2+4x+3
5, x3−32.x2+3x+2=0
6, x2+x+70−2x+22=2x2−12x−14
7, x2+x+x−x2=x+1
8, 3x−5+7−3x=5x2−20x+22
9, 3x2+6x+12+5x4−10x2+9=3−4x−2x2
Help me !