(1)x² +(1+2倍根号3)x + 3 + 根号3 = 0
(x+根号3)(x+1+根号3)=0
x1=-根号3,x2=-1-根号3.
(2)x² - 3|x| - 4 = 0
x>=0,x²-3x-4=0,(x+1(x-4)=0,x1=-1(舍去),x2=4.
x
(1)x² +(1+2倍根号3)x + 3 + 根号3 = 0
(x+根号3)(x+1+根号3)=0
x1=-根号3,x2=-1-根号3.
(2)x² - 3|x| - 4 = 0
x>=0,x²-3x-4=0,(x+1(x-4)=0,x1=-1(舍去),x2=4.
x