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用配方法解下列方程:x2+4x-3=0;
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教案备课库《初二年级数学同修学案201622080》真题及答案
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用配方法解下列方程其中应在两边都加上16的是
x
2
﹣4x+2=0
2x
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﹣8x+3=0
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用适当的方法解下列方程用换元法解方程x2+x2+x2+x=6
用配方法解下列方程时配方错误的是
x
2
-2x-99=0,化为(x-1)
2
=100
x
2
-4x=5,化为(x-2)
2
=9
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+8x+9=0,化为(x+4)
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用适当的方法解下列方程2x2+x-15=0;
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