Question

One of the roots of the equation x2 + 3x - 18 = 0 is 3. What is the other root?

Answer 1

Is that supposed to be x^2?

Answer 2

x^2+3x-18=0
(x+6)(x-3)=0
so x=3 or x=-6

Answer 3

Oh my god, I need to go drink more coffee!

Answer 4

(x-3)(x+6)
x multiplied by x= x^2
x multiplied by 6 = 6x
-3 multiplied x = -3x
and lastly -3 multiplied by 6= -18
so you can add-3x and 6x to get 3x and you'll be left with x^2+3x-18=0