Question

What number must be added to the polynomial to complete the square?
x2+13x

Answer 1

here we go...
half of 13 is
\[\frac{13}{2}\]
\[(\frac{13}{2})^2=\frac{169}{4}\] and that is your answer

Answer 2

not that, it is just that by now it should be routine. half of "x" term is ____
then _____ squared is "answer"

Answer 3

so you can do it pretty much in your head, as long as you know a couple squares

Answer 4

complete the square for
\[x^2+bx\] answer is
\[x^2+bx+(\frac{b}{2})^2\]

Answer 5

capice?

Answer 6

but what about this one,,,,x^2+x