解方程 (1)3x∧2-9=0 (2)3x∧2-7x+4=0 (3)(x+3)(x+1)=6x+4(4) (2x-1)∧2=x∧2+4x+4
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![解方程 (1)3x∧2-9=0 (2)3x∧2-7x+4=0 (3)(x+3)(x+1)=6x+4(4) (2x-1)∧2=x∧2+4x+4](/uploads/image/z/74685-21-5.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B+%EF%BC%881%EF%BC%893x%E2%88%A72-9%3D0+%EF%BC%882%EF%BC%893x%E2%88%A72-7x%2B4%3D0+%EF%BC%883%EF%BC%89%EF%BC%88x%2B3%EF%BC%89%EF%BC%88x%2B1%EF%BC%89%3D6x%2B4%EF%BC%884%EF%BC%89+%EF%BC%882x-1%EF%BC%89%E2%88%A72%3Dx%E2%88%A72%2B4x%2B4)
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