3..x^2 + 6x + q , what is the value of q ?
1). X^2 + 6x + q = x^2 + rx + r-2. some r is satisfied for this quotation. All variable X is satisfied for this
2) x^2 + 6x = Q = (x+m)(x+n) , some m and n is satisfied for this quotation. All variable X is satisfied for this
【讨论】怀疑机经条件2)有偏差作者: 春来草自香 时间: 2002-12-27 12:12 标题: 我也30号考!