1.已知-x+2y=6,则3(x-2y)²-5(x-2y)+6的值为多少?2.观察下列各等式:1/2*2=1/2+2,3/2*3=3/2+3,4/3*4=4/3+4……设n表示正整数,用关于n的等式表示这个规律为:( )*( )=( )+( ).3.含有未知数( )是
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![1.已知-x+2y=6,则3(x-2y)²-5(x-2y)+6的值为多少?2.观察下列各等式:1/2*2=1/2+2,3/2*3=3/2+3,4/3*4=4/3+4……设n表示正整数,用关于n的等式表示这个规律为:( )*( )=( )+( ).3.含有未知数( )是](/uploads/image/z/692584-16-4.jpg?t=1.%E5%B7%B2%E7%9F%A5-x%2B2y%3D6%2C%E5%88%993%28x-2y%29%26%23178%3B-5%EF%BC%88x-2y%29%2B6%E7%9A%84%E5%80%BC%E4%B8%BA%E5%A4%9A%E5%B0%91%3F2.%E8%A7%82%E5%AF%9F%E4%B8%8B%E5%88%97%E5%90%84%E7%AD%89%E5%BC%8F%EF%BC%9A1%2F2%2A2%3D1%2F2%2B2%2C3%2F2%2A3%3D3%2F2%2B3%2C4%2F3%2A4%3D4%2F3%2B4%E2%80%A6%E2%80%A6%E8%AE%BEn%E8%A1%A8%E7%A4%BA%E6%AD%A3%E6%95%B4%E6%95%B0%2C%E7%94%A8%E5%85%B3%E4%BA%8En%E7%9A%84%E7%AD%89%E5%BC%8F%E8%A1%A8%E7%A4%BA%E8%BF%99%E4%B8%AA%E8%A7%84%E5%BE%8B%E4%B8%BA%EF%BC%9A%EF%BC%88+%EF%BC%89%2A%EF%BC%88+%EF%BC%89%3D%EF%BC%88+%EF%BC%89%2B%EF%BC%88+%EF%BC%89.3.%E5%90%AB%E6%9C%89%E6%9C%AA%E7%9F%A5%E6%95%B0%EF%BC%88+%EF%BC%89%E6%98%AF)
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1.已知-x+2y=6,则3(x-2y)²-5(x-2y)+6的值为多少?2.观察下列各等式:1/2*2=1/2+2,3/2*3=3/2+3,4/3*4=4/3+4……设n表示正整数,用关于n的等式表示这个规律为:( )*( )=( )+( ).3.含有未知数( )是
1.已知-x+2y=6,则3(x-2y)²-5(x-2y)+6的值为多少?
2.观察下列各等式:1/2*2=1/2+2,3/2*3=3/2+3,4/3*4=4/3+4……
设n表示正整数,用关于n的等式表示这个规律为:( )*( )=( )+( ).
3.含有未知数( )是方程.
1.已知-x+2y=6,则3(x-2y)²-5(x-2y)+6的值为多少?2.观察下列各等式:1/2*2=1/2+2,3/2*3=3/2+3,4/3*4=4/3+4……设n表示正整数,用关于n的等式表示这个规律为:( )*( )=( )+( ).3.含有未知数( )是
1.=3×(-6)²-5×(-6)+6
=108+30+6
=144
2.n+1/n*(n+1)=n+1/n+(n+1)
3.的等式
1. 72
2.
yyyyyyyyyyyyy
1.x-2y=-(-x+2y)=-6
3(x-2y)²-5(x-2y)+6
=3*36-5*6-6
=108-30-6
=62
2.n+1/1*n=n+1/1+n
3.的等式
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