若(x눀+px+q)(x눀-3x+2)的乘积中不含x대和x눀项,求p,q的值

2025-03-24 07:06:48
推荐回答(1个)
回答1:

原式=x4-3x3+px3-3px2+2px+qx2-3qx+2q
=x4=+(-3+p)x3+(2-3p+q)x2+(2p-3q)x+2q
故有 -3+p=0
2-3p+q=0
解之得: p=3
q=4