The following are the topics:

( 1)x？ +x-6=0

(2)x？ -√3x- 1/4=0

(3)3x？ -6x-2=0

(4)4x？ -6x=0

(5)x？ +4x+8=4x+ 1 1

(6)x(2x-4)=5-8x

This should be a discriminant to solve the equation = =

The above is my reference answer, I hope to help you to some extent, thank you!