Question

x^2-17x+72

Answer 1

You want to solve for x?

Answer 2

Factor!

Answer 3

Factor the trinomial completely.

Answer 4

I am thinking (x-8)(x-9)

Answer 5

Yes, but can you explain how you got that?

Answer 6

Now that you have the factors do you know what x = ?

Answer 7

the product is 72 and the sum is 17, 9*8 =72 and 9 + 8 = 17

Answer 8

remember it's -9 and -8

Answer 9

so x =?

Answer 10

17

Answer 11

two negatives equal a positive.

Answer 12

Remember the factors
(x-8)(x-9)

Answer 13

Look at your factors and solve for x now.

Answer 14

Look at what wolf said.

Answer 15

At what values in your factors would cause x = 0?

Answer 16

Actually think of the equation like this:
(x-8)(x-9)=0

Answer 17

(x-8)(x-9)=0

Answer 18

yes