1 9(2m-2n)²-16(m-2n)²
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/05/19 03:31:31
1 9(2m-2n)²-16(m-2n)²
2 (a-1)²+b²(1-a)
3 a五次方-a
4 12a²x²-27b²y²
5 (x+2y)²-(x-3y)²
2 (a-1)²+b²(1-a)
3 a五次方-a
4 12a²x²-27b²y²
5 (x+2y)²-(x-3y)²
1 9(2m-2n)²-16(m-2n)²
=(6m-6n+4m-8n)(6m-6n-4m+8n)
=(10m-14n)(2m+2n)
=4(5m-7n)(m+n)
2 (a-1)²+b²(1-a)
=(a-1)²-b²(a-1)
=(a-1)(a-1-b²)
3 a五次方-a
=a(a的4次方-1)
=a(a²+1)(a²-1)
=a(a²+1)(a+1)(a-1)
4 12a²x²-27b²y²
=3(4a²x²-9b²y²)
=3(2ax+3by)(2ax-3by)
5 (x+2y)²-(x-3y)²
=(x+2y+x-3y)(x+2y-x+3y)
=5y(2x-y)
=(6m-6n+4m-8n)(6m-6n-4m+8n)
=(10m-14n)(2m+2n)
=4(5m-7n)(m+n)
2 (a-1)²+b²(1-a)
=(a-1)²-b²(a-1)
=(a-1)(a-1-b²)
3 a五次方-a
=a(a的4次方-1)
=a(a²+1)(a²-1)
=a(a²+1)(a+1)(a-1)
4 12a²x²-27b²y²
=3(4a²x²-9b²y²)
=3(2ax+3by)(2ax-3by)
5 (x+2y)²-(x-3y)²
=(x+2y+x-3y)(x+2y-x+3y)
=5y(2x-y)
化简m/(m+n)²+n/m²-n²-2n²/(m+n)(m²-n
[(m+n)(m-n)-(m-n)²+2n(m-n)]÷4n
【(m+n)(m-n)-(m-n²)+2n(m-n)】÷4n
(m+n)²+2(m+n)+1因式分解,
(m²-2m)²n+2n(m²-2m)+n
1 9(2m-2n)²-16(m-2n)²
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