Question

X^2-10x+c

Answer 1

I think the question is: find the value of C to complete the square!
Am I right?

Answer 2

Yes

Answer 3

\[(x-5)^2+c-25\]

Answer 4

To complete the square, you need to check that first, please!

Answer 5

If you're trying to make x^2-10x+c into a perfect square trinomial

To find the value of c, divide the middle coefficient by 2 and square it.

Do note that this only works if the coefficient in front of x^2 is 1.
Remember that the form for a perfect square trinomial is a^2 + 2ab + b^2 and that this can be factored to (a+b)^2.