【分解因式,必须要过程】-7x³y-14x²y²
来源:学生作业帮 编辑:百度作业网作业帮 分类:数学作业 时间:2024/08/10 16:02:57
【分解因式,必须要过程】-7x³y-14x²y²
【分解因式,必须要过程】
-7x³y-14x²y²
7x³-63x
3a²-12b²
6(m-n)³-3(n-m)²
3a³-3ab²
-2a³b+4a²b²-2ab³
2(x-y)²-6(x-y)
【分解因式,必须要过程】
-7x³y-14x²y²
7x³-63x
3a²-12b²
6(m-n)³-3(n-m)²
3a³-3ab²
-2a³b+4a²b²-2ab³
2(x-y)²-6(x-y)
![【分解因式,必须要过程】-7x³y-14x²y²](/uploads/image/z/15368541-69-1.jpg?t=%E3%80%90%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%2C%E5%BF%85%E9%A1%BB%E8%A6%81%E8%BF%87%E7%A8%8B%E3%80%91-7x%26%23179%3By-14x%26%23178%3By%26%23178%3B)
-7x³y-14x²y²=-7x²y(x+2y)
7x³-63x=7x(x²-9)=7x(x+3)(x-3)
3a²-12b²=3(a²-4b²)=3(a+2b)(a-2b)
6(m-n)³-3(n-m)²=3(m-n)²[2(m-n)-1]=3(m-n)²(2m-2n-1)
3a³-3ab²=3a(a²-b²)=3a(a+b)(a-b)
-2a³b+4a²b²-2ab³=-2ab(a²-2ab+b²)=-2ab(a-b)²
2(x-y)²-6(x-y)=2(x-y)[(x-y)-3]=2(x-y)(x-y-3)
7x³-63x=7x(x²-9)=7x(x+3)(x-3)
3a²-12b²=3(a²-4b²)=3(a+2b)(a-2b)
6(m-n)³-3(n-m)²=3(m-n)²[2(m-n)-1]=3(m-n)²(2m-2n-1)
3a³-3ab²=3a(a²-b²)=3a(a+b)(a-b)
-2a³b+4a²b²-2ab³=-2ab(a²-2ab+b²)=-2ab(a-b)²
2(x-y)²-6(x-y)=2(x-y)[(x-y)-3]=2(x-y)(x-y-3)