Posted by Cynthia on Wednesday, April 2, 2008 at 4:08pm.
I am having trouble with this problem. I have done it several times and come up with two different answers. Can someone tell me what I am doing wrong?
Write the quadratic function in the form a(xh)^2+k
y=x^22x9
(x^22x)9
(x^2+2x+11)9
(x^2+2x+1)
answers
(x+1)^2 or x^22x9=y

Algebra  Anonymous, Wednesday, April 2, 2008 at 7:17pm
I believe you are missing k. Remember y = x^22x9 and y = a(xh)^2+k. What you have gotten for y is (x+1)^2. If you expand it, you'll see that it is x^+2x+1 which is not equal to x^22x9. From your work which I believe is mostly correct but you made a tiny mistake. You pulled out 9 and 1, 10, from the original equation. That should be what you're missing. Even though you pulled them out they don't disappear into thin air ;/.

Algebra  Cynthia, Thursday, April 3, 2008 at 12:42am
So.....
from your answer I need to add a 10 to (x+1)^2+2x+10?
Answer This Question
Related Questions
 algebra  Solve the quadratic equation: 2x(squared)+6x+12=0 I know you have to ...
 algebra2  Write the expression (2x)(4y) + 9x + 10y + (8x)(4y) in a simpler form...
 Algergra  I am stumped! I have been working on these problems for the longest ...
 Algebra/Quadratic equations  I have to make a word problem/story out of this ...
 algebra  You throw a rock off the balcony overlooking your backyard the table ...
 Algebra  I have an assignment to write an equation to pointslope form, then to...
 algebra  could you please multiply these together and tell me what you come up ...
 Math  I am having trouble figuring the appropriate expression for this problem...
 Algebra HELP!  I cannot find an example and am confused about what to do with ...
 math 11  4. a)how many different xinterceps could the graph of a quadratic ...
More Related Questions