Question

Can someone tell me how to solve this rational expression please x² - 9 x + 3

Answer 1

x² - 9 x + 3=

x² - 9 x + 3=0
D=(-9)^2-4*3=81-12=69
x1=(9+/sqrt69)/2
x2=(9-/sqrt69)/2

the answer x² - 9 x + 3=(x-(9+/sqrt69)/2)((9+/sqrt69)/2)

Answer 2

Or use the formula which I forgot it's name... I think it's called the quadratic formula.

a := 1
b := -9
c := 3

D = Discriminant := b^2 - 4ac

you will get a positive D