2022年提公因式法导学案 .pdf
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1、主备人:审核人:时间:备 注课题:4.2 提公因式法(一)学习目标:1、了解因式分解的意义及整式乘法的区别与联系;2、理解公因式的概念,会用提公因式法分解因式。重点:会用提公因式法把多项式因式分解;难点:找出多项式的公因式,并能正确地提公因式。一、自主学习1、某工厂有一个圆环形的机器零件,该零件的外壁是一个半径为 R的圆,内壁是一个半径为r 的圆,工人师傅求得圆环的面积为(R2r2),他为什么这样记录呢?八 年级 数学 导学案2、请你用自己的语言给公因式和因式分解下个定义,并举例说明。3、今天学习的因式分解的方法叫什么?在运用时的关键是什么?4、你能总结一下找公因式的方法吗?二、小组合作:1、
2、填空题:(1)a(m-6),b(m-6)的公因式是 _(2)a(b-a)=-a()(3)(a+b)(a-b)-(b+a)=()(a-b-1)文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ
3、9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4
4、L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 Z
5、P4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7
6、P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档
7、编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF1
8、0D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4(4)2(x-y)-(x-y
9、)2=(x-y)()2、把下列各式进行因式分解(1)3a212a(2)4x2y16xy 8x2(3)3(a-b)+a(b-a)(4)a(m-6)+b(m-6)(5)6(m-n)2+3(m-n)(6)x(x-y)+y(y-x)三、展示反馈:1.把下面多项式中各项的公因式填在括号内:(1)7(a-2)2+14(a-2)()(2)a2b(x-y)-ab(y-x)2()文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4
10、X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7
11、D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码:CF10D8H9V8K7 HZ9P10S4L4X5 ZP4X7N7P7D4文档编码
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