(3x+1)²-4=0 5x²-7x-6=0 25x²-10-1=0 用分解因式发做,
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![(3x+1)²-4=0 5x²-7x-6=0 25x²-10-1=0 用分解因式发做,](/uploads/image/z/7616012-68-2.jpg?t=%EF%BC%883x%2B1%29%26%23178%3B-4%3D0+5x%26%23178%3B-7x-6%3D0+25x%26%23178%3B-10-1%3D0+%E7%94%A8%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%E5%8F%91%E5%81%9A%2C)
(3x+1)²-4=0 5x²-7x-6=0 25x²-10-1=0 用分解因式发做,
(3x+1)²-4=0 5x²-7x-6=0 25x²-10-1=0 用分解因式发做,
(3x+1)²-4=0 5x²-7x-6=0 25x²-10-1=0 用分解因式发做,
(3x+1)²-4=0
(3x+1+2)(3x+1-2)=0
3x+3=0 3x-1=0
x1=-1 x2=1/3
5x²-7x-6=0
(5x+3)(x-2)=0
5x+3=0 x-2=0
x1=-3/ x2=2
25x²-10-1=0
(5x+3)(5x-3)=0
5x+3=0 5x-3=0
x1=-3/5 x2=3/5
用平方法差公式或者十字相乘法因式分解