Question

What number must you add to the polynomial below to complete the square?X^2-10x

Answer 1

To complete the polynomial we have to have something of the form:

`x^2+2bx+b^2`

Then, to complete the polynomial given we must add

`\begin{gathered} (-5)^2=25 \\ x^2+2(-5)x+(-5)^2\text{ } \end{gathered}`