添括号 -2X²-4x+6 1.-2x²-( ) 2.-2x²-4( ) 3.-2( ) 4.-6( )-2X²-4x+6 1.括号里随你怎么填 但是必须结果一样.比如2*3+3*4 =3*() 括号里填2+4 就这样.
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![添括号 -2X²-4x+6 1.-2x²-( ) 2.-2x²-4( ) 3.-2( ) 4.-6( )-2X²-4x+6 1.括号里随你怎么填 但是必须结果一样.比如2*3+3*4 =3*() 括号里填2+4 就这样.](/uploads/image/z/13249027-19-7.jpg?t=%E6%B7%BB%E6%8B%AC%E5%8F%B7+-2X%26%23178%3B-4x%2B6+1.-2x%26%23178%3B-%EF%BC%88+%EF%BC%89+2.-2x%26%23178%3B-4%EF%BC%88+%EF%BC%89+3.-2%EF%BC%88+%EF%BC%89+4.-6%EF%BC%88+%EF%BC%89-2X%26%23178%3B-4x%2B6+1.%E6%8B%AC%E5%8F%B7%E9%87%8C%E9%9A%8F%E4%BD%A0%E6%80%8E%E4%B9%88%E5%A1%AB+%E4%BD%86%E6%98%AF%E5%BF%85%E9%A1%BB%E7%BB%93%E6%9E%9C%E4%B8%80%E6%A0%B7.%E6%AF%94%E5%A6%822%2A3%2B3%2A4+%3D3%2A%EF%BC%88%EF%BC%89+%E6%8B%AC%E5%8F%B7%E9%87%8C%E5%A1%AB2%2B4+%E5%B0%B1%E8%BF%99%E6%A0%B7.)
添括号 -2X²-4x+6 1.-2x²-( ) 2.-2x²-4( ) 3.-2( ) 4.-6( )-2X²-4x+6 1.括号里随你怎么填 但是必须结果一样.比如2*3+3*4 =3*() 括号里填2+4 就这样.
添括号 -2X²-4x+6 1.-2x²-( ) 2.-2x²-4( ) 3.-2( ) 4.-6( )
-2X²-4x+6 1.括号里随你怎么填 但是必须结果一样.比如2*3+3*4 =3*() 括号里填2+4 就这样.
添括号 -2X²-4x+6 1.-2x²-( ) 2.-2x²-4( ) 3.-2( ) 4.-6( )-2X²-4x+6 1.括号里随你怎么填 但是必须结果一样.比如2*3+3*4 =3*() 括号里填2+4 就这样.
1. -2x²-(4x-6)
2. -2x²-4(x-2分之3 )
3. -2(x²+2x-3 )
4. -2(x+1)²-4