x²+√6x= -2√3 -√2x即x²+(√6+√2)x+2√3=0判别式Δ=(√6+√2)² -4*2√3=(√6-√2)²所以方程的解为：x= [-(√6+√2)+√Δ]/2或[-(√6+√2)-√Δ]/2即x= [-(√6+√2)+√6-√2]/2 或[-(√6+√2)...