麻烦解两个方程~x²-3x=6 ;3x(x-3)=2(x-1)(x+1)速度哦

问题描述:

麻烦解两个方程~x²-3x=6 ;3x(x-3)=2(x-1)(x+1)速度哦

如果题目是:x²-3x=6则: x^2 - 3x - 6 = 0x = (3 + 根号33)/2或 x = (3 - 根号33)/22)3x(x-3)=2(x-1)(x+1)3x^2 -9x = 2x^2 - 2x^2 -9x + 2 = 0x =( 9 + 根号73)/2或x =( 9 - 根号73)/2...