分解因式1.12a³b²-9a²b+3ab1.12a³b²-9a²b+3ab 2.a³-4a²b+4ab² 3.(3x+y)²-(x-3y)² 4.(2a-b)²+8ab 分解因式
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![分解因式1.12a³b²-9a²b+3ab1.12a³b²-9a²b+3ab 2.a³-4a²b+4ab² 3.(3x+y)²-(x-3y)² 4.(2a-b)²+8ab 分解因式](/uploads/image/z/7134709-13-9.jpg?t=%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F1.12a%26%23179%3Bb%26%23178%3B-9a%26%23178%3Bb%2B3ab1.12a%26%23179%3Bb%26%23178%3B-9a%26%23178%3Bb%2B3ab+2.a%26%23179%3B-4a%26%23178%3Bb%2B4ab%26%23178%3B+3.%283x%2By%29%26%23178%3B-%28x-3y%29%26%23178%3B+4.%282a-b%29%26%23178%3B%2B8ab+%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F)
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分解因式1.12a³b²-9a²b+3ab1.12a³b²-9a²b+3ab 2.a³-4a²b+4ab² 3.(3x+y)²-(x-3y)² 4.(2a-b)²+8ab 分解因式
分解因式1.12a³b²-9a²b+3ab
1.12a³b²-9a²b+3ab 2.a³-4a²b+4ab² 3.(3x+y)²-(x-3y)² 4.(2a-b)²+8ab 分解因式
分解因式1.12a³b²-9a²b+3ab1.12a³b²-9a²b+3ab 2.a³-4a²b+4ab² 3.(3x+y)²-(x-3y)² 4.(2a-b)²+8ab 分解因式
1、12a³b²-9a²b+3ab =3ab(4a²b-3a+1)
2、a³-4a²b+4ab² =a(a² -4ab+4b²)=a(a-2b)²
3、(3x+y)²-(x-3y)²=(3x+y+x-3y)(3x+y-x+3y)=(4x-2y)(2x+4y)=4(2x-y)(x+2y)
4、(2a-b)²+8ab =4a ² -4ab+b²+8ab=4a²+4ab+b²=(2a+b)²
12a³b²-9a²b+3ab
=3ab(4a^2b-3a+1)
a³-4a²b+4ab²
=a(a^2-4ab+4b^2)
=a(a-2b)^2
.(2a-b)²+8ab
=4a^2-4ab+b^2+8ab
=4a^2+4ab+b^2
=(2a+b)^2