The equation you quoted needs to be decomposed by the factor (x- 1)(x-2)=0.

X= 1 or 2;

I think the study set should not only pay attention to understanding, but also master the methods. The most important thing is to memorize and use mathematical symbols in sets.

Read more examples to explain and solve problems, and then do as many exercises as possible. In fact, that set is very easy to learn and will become your math score.

PS: I think what you need urgently now is factorization and Vieta theorem.

Please adopt ~ ~ ~