Question

Can someone please answer this? x2-9x+20=0 .

Answer 1

in order to factor this expression
you need two numbers a and b where ab = 20 and a + b = -9
the factors would then be of the form
(x - a)(x - b)

Answer 2

By the way, it's all about descriminant.

Answer 3

does that mean u need to use quadratic formula?

Answer 4

well this one can be solved by factoring

Answer 5

@hartnn no need quadratic formula.

Answer 6

actually this must be solved by descriminant.