Posted by **jasmine20** on Thursday, April 19, 2007 at 9:26pm.

Is this trinomial a perfect square

x^2-6x+9

if the trinomial starts with x^2 and 1/2 of the middle term coefficient squared equals the last term, then it is a perfect square.

tell me what you found.

i thought it was not a perfect square. because i tried factoring it but it won't come out.am i wrong then

expand (x+3)^2

(x+3)(x+3)

x^2+3x+3x+9

x^2+6x+9

but in the original is x^2-6x+9

(x+3)^2 is incorrect. It is (x-3)^2:

x^2-3x-3x+9

x2-6x+9

and there is your answer.

Do you get it?

(x-3)(x-3)

x^2-3x-3x+9

x^2-6x+9

therefore it is a perfect square is this correct then

sorry emily, of course I meant (x-3)^2, it was a typo. sorry, its getting late where I am.

Yes it is. Good job!

## Answer This Question

## Related Questions

- math,help - how do i find the following: is there a formula for this? Problem #...
- MATH - which following trinomial is a perfect square? A. x^2 + 2x - 3 B. x^2 - ...
- Math - Find the constant term that should be added to make the following ...
- Algebra 2 - Replace each of the question marks with a value that will make the ...
- Math - this question does not make sense to me. Add the proper constant to the ...
- math 118 - x^2+10x Add the proper constant to the binomial so tha tthe resulting...
- math - Each of the following pairs of terms is the middle term and last term of ...
- trinomial - I need this answer. Which trinomial is a perfect square trinomial? A...
- math,correction - is this correct Find the constant term that should be added to...
- algebra 2 - find the value of c that makes each trinomial a perfect square. then...

More Related Questions