Posted by **electra** on Tuesday, June 3, 2008 at 11:11pm.

1) wat term should be added to x squared+22x, so tat the result is a perfect square trrinomial

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**DrBob222**, Tuesday, June 3, 2008 at 11:32pm
I think that is 1/2 the b term (1/2*22 and that squared) so the term to be added would be 11^2 = 121.

x^2 + 22x + 121 = (x+11)(x+11)

- math final tmrw!!!!!!! -
**Quidditch**, Tuesday, June 3, 2008 at 11:33pm
(x + a)(x + a)

=x^2 + 2ax + a^2

In the problem,

2ax=22x

2a=22

a=11

substituting back

(x + 11)(x + 11)

x^2 + 22x + 121

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