SOLUTION: ok, i'm stuck. I am trying to solve this quadratic equation by factoring. Can you help me?
The problem is:
x^2-11x+18=0
to find -11, I got -9 x -2 which is equal to =18
so I
Algebra.Com
Question 971131: ok, i'm stuck. I am trying to solve this quadratic equation by factoring. Can you help me?
The problem is:
x^2-11x+18=0
to find -11, I got -9 x -2 which is equal to =18
so I end up with (x-9)(x-2)=0 now where do i go from here?
is it x-9=0 x-2=0
+9 +9 +2 +2
so the answer is 2,9. but how do i check it.
Found 2 solutions by Boreal, stanbon:
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
You've done fine. The solutions are 2,9
Put them back in the equation.
X^2-11x+18=0
X=2
4 - 22 +18=0. Yes
X=9
81 - 99 + 18=0. Yes
Done.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
ok, i'm stuck. I am trying to solve this quadratic equation by factoring. Can you help me?
The problem is:
x^2-11x+18=0
to find -11, I got -9 x -2 which is equal to =18
so I end up with (x-9)(x-2)=0 now where do i go from here?
is it x-9=0 x-2=0
+9 +9 +2 +2
so the answer is 2,9.
-----
That's right. You're doing just find.
--------------------
but how do i check it?
--------
Substitute each of the "answers" into
x^2-11x+18=0
Checking:: x = 2
2^2-11*2+18 = 0
4-22+18 = 0
0 = 0
--------------
Checking:: x = 9
9^2-11*9+18 = 0
81-99+18 = 0
-18+18 = 0
0 = 0
-------------
Cheers,
Stan H.
--------------
RELATED QUESTIONS
Hello. I am really stuck on my homework and need help. I am trying to solve this... (answered by ewatrrr)
i am really having touble factoring this x^3 + x^2 = 0. Can you show me how to solve... (answered by checkley77,solver91311)
Good evening,
I am having difficulties factoring out this problem:
x^3 - 6x^2 + 11x (answered by scott8148)
Hello Tutors, I need some serious help here, as This quadriatic form stuff is confusing... (answered by JP)
I need help! I am trying to figure this problem out. The problem is to solve by... (answered by orca)
Can you please help me solve this radical equaqtion? {{{sqrt(x-1)+x=3}}}
This problem... (answered by Edwin McCravy)
I am trying to factor this problem but i'm stumped can you help me? Here is the problem:
(answered by josgarithmetic,MathTherapy)
Good Evening Tutor,
I am having a hard time with this problem and was hoping to get a (answered by oberobic)
I am trying to solve this problem using the quadratic formula but I need help. here is... (answered by Alan3354,fractalier,LinnW)