十字相乘法:(1)3a五次方-11a³b²-4ab四次方 (2)(a+1)x²+(a+1)x-6a-6
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/30 22:27:48
![十字相乘法:(1)3a五次方-11a³b²-4ab四次方 (2)(a+1)x²+(a+1)x-6a-6](/uploads/image/z/371038-22-8.jpg?t=%E5%8D%81%E5%AD%97%E7%9B%B8%E4%B9%98%E6%B3%95%EF%BC%9A%EF%BC%881%EF%BC%893a%E4%BA%94%E6%AC%A1%E6%96%B9-11a%26%23179%3Bb%26%23178%3B-4ab%E5%9B%9B%E6%AC%A1%E6%96%B9+%EF%BC%882%EF%BC%89%EF%BC%88a%2B1%29x%26%23178%3B%2B%EF%BC%88a%2B1%29x-6a-6)
x){tw<9zN'<[ٴjʆI Z$1Y# mYQ
%$*;hm5j1AaЁ '.ahM&Wk
"+"%[
dy
,F׀) ʡ mcM<;P K
十字相乘法:(1)3a五次方-11a³b²-4ab四次方 (2)(a+1)x²+(a+1)x-6a-6
十字相乘法:(1)3a五次方-11a³b²-4ab四次方 (2)(a+1)x²+(a+1)x-6a-6
十字相乘法:(1)3a五次方-11a³b²-4ab四次方 (2)(a+1)x²+(a+1)x-6a-6
3a五次方-11a³b²-4ab四次方
=a(3a的4次方-11a²b²-4b四次方)
=a(a²-4b²)(3a²+b²)
=a(a-2b)(a+2b)(3a²+b²)
(a+1)x²+(a+1)x-6a-6
=(a+1)x²+(a+1)x-6(a+1)
=(a+1)(x²+x-6)
=(a+1)(x-2)(x+3)