(1) 4(x-1)²=9(直接开方)(2) 25x²+10x+1=0(配方法)(3) 7x(5x+2)=6(5x+2)(因式分解)
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![(1) 4(x-1)²=9(直接开方)(2) 25x²+10x+1=0(配方法)(3) 7x(5x+2)=6(5x+2)(因式分解)](/uploads/image/z/1287942-6-2.jpg?t=%EF%BC%881%EF%BC%89+4%EF%BC%88x-1%EF%BC%89%26%23178%3B%3D9%EF%BC%88%E7%9B%B4%E6%8E%A5%E5%BC%80%E6%96%B9%EF%BC%89%EF%BC%882%EF%BC%89+25x%26%23178%3B%2B10x%2B1%3D0%EF%BC%88%E9%85%8D%E6%96%B9%E6%B3%95%EF%BC%89%EF%BC%883%EF%BC%89+7x%EF%BC%885x%2B2%EF%BC%89%3D6%EF%BC%885x%2B2%EF%BC%89%EF%BC%88%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%EF%BC%89)
(1) 4(x-1)²=9(直接开方)(2) 25x²+10x+1=0(配方法)(3) 7x(5x+2)=6(5x+2)(因式分解)
(1) 4(x-1)²=9(直接开方)
(2) 25x²+10x+1=0(配方法)
(3) 7x(5x+2)=6(5x+2)(因式分解)
(1) 4(x-1)²=9(直接开方)(2) 25x²+10x+1=0(配方法)(3) 7x(5x+2)=6(5x+2)(因式分解)
(1) 2(x-1)=3→x=5/2
(2)(5x+1)²=0→x=-1/5
(3)7x=6 x=6/7