Question

Factorise then following X^2-3x+2

Answer 1

(X-2)(X-1)

To do this, first you want to notice that there is no number in front of the x^2.
This will not work on its own if there is

Find 2 numbers that multiply to 2 and add to -3
-3 is in front of the x and 2 is alone in the equation so those are the numbers you are using

-2 and -1 are the only whole numbers that do that
-2 + -1 = -3
-2 * -1 = 2