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分解因式:x2-x-2= .
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教案备课库《初二年级数学同修学案201621019》真题及答案
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我们已经学过将一个多项式分解因式的方法有提公因式法和运用公式法其实分解因式的方法还有分组分解法拆项法
将下列多项式分解因式结果中不含因式x﹣1的是
x
2
﹣1
x
2
+2x+1
x
2
﹣2x+1
x(x﹣2)+(2﹣x)
分解因式-x3+2x2-x=______
阅读与思考整式乘法与因式分解是方向相反的变形由x+px+q=x2+p+qx+pq得x2+p+qx+p
分解因式x2-x2-12x2-x+36.
解下列方程①2x2-18=0②9x2-12x-1=0③3x2+10x+2=0④25x-12=25x-
①直接开平方法,②配方法,③公式法,④因式分解法
①直接开平方法,②公式法,③、④因式分解法
①因式分解法,②公式法,③配方法,④因式分解法
①直接开平方法,②、③公式法,④因式分解法
因式分解22-x-xx-2
将下列多项式分解因式结果中不含因式x﹣1的是
x
2
﹣1
x(x﹣2)+(2﹣x)
x
2
﹣2x+1
x
2
+2x+1
分解因式x2x﹣2﹣16x﹣2
将下列多项式分解因式结果中不含因式x﹣1的是
x
2
﹣1
x(x﹣2)+(2﹣x)
x
2
﹣2x+1
x
2
+2x+1
分解因式x3-2x2+x=________
将下列多项式分解因式结果中不含因式x﹣1的是
x
2
﹣1
x
2
+2x+1
x
2
﹣2x+1
x(x﹣2)﹣(x﹣2)
观察__同学把多项式x2+6x+10x2+6x+8+1分解因式的过程解设x2+6x=y则原式=y+1
分解因式x2-x+6x-2=__________
阅读下列分解因式的过程再回答所提出的问题1+x+xx+1+xx+12=1+x[1+x+xx+1]=1
阅读下列分解因式的过程再回答问题1+x+xx+1+xx+12=1+x[1+x+xx+1]=1+x21
因式分解x2x﹣2﹣16x﹣2=
分解因式2x2﹣x
下面是某同学对多项式x2-4x+2x2-4x+6+4进行因式分解的过程.解设x2-4x=y原式=y+
分解因式x2﹣4=x+2x﹣2.
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