一、填空题（每空3分，共54分）；1．方程x2＝5x的解是；2方程x2-2x－4＝0的解是；3．方程x4－5x2－6＝0的解是；4方程的解是；5方程“’”“一【十3，’－2“””“—儿，s．方程xtwsx＋／7河南一ti的解是、；6方程X’一2人一8一0的解是、；7不等式K一2。＞3的解集是；8．不等 First, fill in the blanks (3 points for each space, a total of 54 points); 1. The solution of the equation x2=5x is; 2 the solution of the equation x2-2x-4=0 is; 3. The solution of the equation x4-5x2-6=0 is; the solution of the 4 equation is; 5 the equation “’” “a [decimal 3,’-2 ”“ ”-children, s. equation xtwsx+/7 Henan one ti solution Yes,; 6 equations X’ - 2 people - 8 -0’s solutions are; 7 inequality K - 2. Solutions set of 3 are;