Question

Perfect Square Trinomials-Help Please
Rhett decides to build a square room for his movie and music collection. If the area of the room is 9x2 − 6x + 1 square feet, what is the length of one side of the room?

(3x + 1) feet
(9x − 1) feet
(3x − 1) feet
(9x + 1) feet

Answer 1

@mathmale

Answer 2

@jdoe0001

Answer 3

hmm what's a perfect square trinomial anyway?

Answer 4

did you mean like \(\begin{array}{cccccllllll}
{\color{brown}{ a}}^2& + &2{\color{brown}{ a}}{\color{blue}{ b}}&+&{\color{blue}{ b}}^2\\
\downarrow && &&\downarrow \\
{\color{brown}{ a}}&& &&{\color{blue}{ b}}\\
&\to &({\color{brown}{ a}} + {\color{blue}{ b}})^2&\leftarrow
\end{array}\qquad

% perfect square trinomial, negative middle term
\begin{array}{cccccllllll}
{\color{brown}{ a}}^2& - &2{\color{brown}{ a}}{\color{blue}{ b}}&+&{\color{blue}{ b}}^2\\
\downarrow && &&\downarrow \\
{\color{brown}{ a}}&& &&{\color{blue}{ b}}\\
&\to &({\color{brown}{ a}} - {\color{blue}{ b}})^2&\leftarrow
\end{array}\)
?

Answer 5

a trinomial that indicates the area of a square i think

Answer 6

im not that sure this is my first lesson on this

Answer 7

well... you'd want to cover that first I'd think, before the eexercise

Answer 8

yah i actually skipped right to the test instead of reading the material first

Answer 9

i thought too much of myself

Answer 10

and once you enter the test you can get out until you finish or else you get a 0

Answer 11

well, if the test is any good, then 0 will be the right grade, no?
I mean, the test is supposed to "test", it's meant to let the student know what needs work on :)

Answer 12

LOL

Answer 13

well thanks anyway man

Answer 14

think about it this way

you go skydiving, you forgot you parachute
the plane jump is meant to test you if you can land well
so you jump

what would be the proper outcome?


so... tis better to notice the parachute is missing, before jumping though

Answer 15

Prefer a loss to a dishonest gain; the one brings pain at the moment, the other for all the time.

~~ [Chilton] ~~

Answer 16

wWHAT KIND OF I DIOT WOULD FORGET HIS PARACHUTE!!!!

Answer 17

he mustve been one silly guy

Answer 18

anyhow, once you cover the perfect trinomial

\(\begin{array}{cccccllllll}
{\color{brown}{ a}}^2& - &2{\color{brown}{ a}}{\color{blue}{ b}}&+&{\color{blue}{ b}}^2\\
\downarrow && &&\downarrow \\
{\color{brown}{ a}}&& &&{\color{blue}{ b}}\\
&\to &({\color{brown}{ a}} - {\color{blue}{ b}})^2&\leftarrow
\end{array}
\\ \quad \\
hint\qquad 9x^2-6x+1\implies 3^2x^2-6x+1^2\implies ({\color{brown}{ 3x}})^2-6x+{\color{blue}{ 1}}^2\)

Answer 19

thankz

Answer 20

yw

Answer 21

i think ive figured it out because the 9x2 − 6x + 1 expression is simplified to (3x−1)(3x−1) and area is widthxlegnth so (3x−1) would be my answer???

Answer 22

@jigglypuff314

Answer 23

@Bobo-i-bo

Answer 24

@surjithayer

Answer 25

correct

Answer 26

correct.

Answer 27

thanks