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一、填空（每题４分，共４０分）１一元二次方程的一般形式是（其中）它的求根公式为（其中）２已知关于ｘ的方程ｘ２－ｐｘ＋２ｐ＝０的一个根为１，则ｐ＝，它的另一个根为３直接写出下列方程的解（１）２（ｘ－１）（ｘ＋３）＝０（２）３ｘ２＋４ｘ－１＝０４?
First, fill in the blank (each question 4 points, a total of 40 points) 1 quadratic equation of the general form is (among) its root formula is (among) 2 known about x equation x2-px +2 p = 0 One root is 1, then p =, and the other root is 3. Write the solution of the following equation directly: (1) 2 (x-1) (x + 3) = 0 (2) 3x2 + 4x-1 =