Posted by **Nick** on Thursday, December 6, 2007 at 3:24pm.

this question does not make sense to me.

Add the proper constant to the binomial so that the resulting trinomial is a perfect square trinomial. then factor the trinomail.

X^2+21x+__

What is the constant term?

What is the factored for of the trinomial?

i just cant figure the constant

- Math -
**bobpursley**, Thursday, December 6, 2007 at 4:21pm
Take half of 21, and square it.

(21/2)^2

(x+21/2)^2

- Math -
**drwls**, Thursday, December 6, 2007 at 6:29pm
What you end up with will be

x^2 + 21x + 110.25 = (x + 10.5)^2

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