用配方的方法解:6x²-x-2=02x²-12x=93x²-6x-5=02x²+3x=2
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![用配方的方法解:6x²-x-2=02x²-12x=93x²-6x-5=02x²+3x=2](/uploads/image/z/6920497-1-7.jpg?t=%E7%94%A8%E9%85%8D%E6%96%B9%E7%9A%84%E6%96%B9%E6%B3%95%E8%A7%A3%EF%BC%9A6x%26%23178%3B-x-2%3D02x%26%23178%3B-12x%3D93x%26%23178%3B-6x-5%3D02x%26%23178%3B%2B3x%3D2)
用配方的方法解:6x²-x-2=02x²-12x=93x²-6x-5=02x²+3x=2
用配方的方法解:6x²-x-2=0
2x²-12x=9
3x²-6x-5=0
2x²+3x=2
用配方的方法解:6x²-x-2=02x²-12x=93x²-6x-5=02x²+3x=2
6x²-x-2=6(x²-x/6+1/144)=2+1/24=49/24
(x-1/12)²=49/144
x1=1/12-7/12=-1/2,x2=1/12+7/12=2/3
2x²-12x+18=27
x²-6x+9=27/2
(x-3)²=27/2
x1=3-(3/2)√6,x2=3+(3/2)√6
3x²-6x-5=0
3(x²-2x+1)=8
(x-1)²=8/3=24/9
x1=1-(2/3)√6,x2=1+(2/3)√6
x²+3x/2=1
x²+3x/2+9/16=25/16
(x+3/4)²=25/16
x1=-3/4-5/4=-2,x2=-3/4+5/4=1/2