2分之三X平方减括号2K减3括回来X加4等于0,_数学解答

2分之三X平方减括号2K减3括回来X加4等于0,

人气：273 ℃　时间：2019-09-21 00:34:52

解答

(3/2)x²-(2k-3)x+4=0x²-[2(2k-3)/3]x+8/3=0[x-(2k-3)/3]²-(2k-3)²/9+8/3=0[x-(2k-3)/3]²-(4k²-12k-15)/9[x-(2k-3)/3+√(4k²-12k-15)/3][x-(2k-3)/3-√(4k²-12k-15)/3]=0解...