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由﹣x=9得x=﹣3 由7x=6x﹣1得7x﹣6x=﹣1
由5x=10得x=2 由3x=6﹣x得3x+x=6
6x=4-1 -6x=-4-1 6x=1+4 6x=-4-1
(x+3)2=14 (x﹣3)2=14 (x+3)2=11 (x+6)2=14
2x-1+6x=3(3x+1) 2(x-1)+6x=3(3x+1) 2(x-1)+x=3(3x+1) (x-1)+x=3(x+1)
2x-1+6x=3(3x+1) 2(x-1)+6x=3(3x+1) 2(x-1)+x=3(3x+1) (x-1)+x=3(3x+1)
x2·x3=x6 (x2)3=x8 x2+x3=x5 x6÷x3=x3
)6x2-2x+1=0 ( )6x2+2x+3=0 ( )6x2+2x+1=0 ( )6x2+2x-3=0
2x-1+6x=3(3x+1) 2(x-1)+6x=3(3x+1) 2(x-1)+x=3(3x+1) (x-1)+x=3(x+1)
2x-1+6x=3(3x+1) 2(x-1)+6x=3(3x+1) 2(x-1)+x=3(3x+1) (x-1)+x=3(x+1)(导学号 02052152)