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OpenStudy (anonymous):
the fractions kind of scaring me
OpenStudy (anonymous):
half of \(\frac{2}{3}\) is ?
OpenStudy (anonymous):
rude
OpenStudy (anonymous):
don't let them scare you
just take half of two thirds
OpenStudy (anonymous):
hm 1/3?
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OpenStudy (anonymous):
not 1/3?
but rather 1/3!!
OpenStudy (anonymous):
OpenStudy (anonymous):
that is step one
step two is what is \(\left(\frac{1}{3}\right)^2\)
OpenStudy (anonymous):
okay so 1/9
OpenStudy (anonymous):
exactly
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OpenStudy (anonymous):
so
\[x^2-\frac{2}{3}x+\frac{1}{9}=(x-\frac{1}{3})^2\]
OpenStudy (anonymous):
these seem a lot simpler than I thought. Thanks for helping me realize how to find the answer and how to not overthink things and doubt
OpenStudy (anonymous):
they are very simple once you know the rules
really easy
even with (ugh) fractions
OpenStudy (anonymous):
could we do one more?
OpenStudy (anonymous):
ok why not?
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OpenStudy (anonymous):
so x^2-1/3x
OpenStudy (anonymous):
ooh another fraction
want to try it?
OpenStudy (anonymous):
half of 1/is 1/6 right? 1/3 x 1/2? (so much for not doubting)
OpenStudy (anonymous):
right, half of \(\frac{1}{3}\) is \(\frac{1}{6}\)
OpenStudy (anonymous):
then second , what is \((\frac{1}{6})^2\) ?
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OpenStudy (anonymous):
x^2-1/3+1/12= (x^2-1/6)2
OpenStudy (anonymous):
oops
so close
OpenStudy (anonymous):
you balked on \[\huge \left(\frac{1}{6}\right)^2\]
OpenStudy (anonymous):
x^2 -1/3x+1/36=(x^2-1/6)^2 WOW..
OpenStudy (anonymous):
yup
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OpenStudy (anonymous):
Thanks. Shall we complete the square now? I just need some help getting started
OpenStudy (anonymous):
lol what the heck you think you have been doing???
OpenStudy (anonymous):
that's what the second set of instructions is asking for specifically so I am going by what my textbook says
OpenStudy (anonymous):
ok lets try one
believe me it is the same
OpenStudy (anonymous):
okay let's do this
x^2+6x=7
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OpenStudy (anonymous):
ready?
OpenStudy (anonymous):
you would still take hald of six and square it ?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
*half
OpenStudy (anonymous):
subtract 7 over?
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OpenStudy (anonymous):
no
OpenStudy (anonymous):
leave it right where it is
OpenStudy (anonymous):
you want me to walk you though this one?
OpenStudy (anonymous):
x^2+6x+9=7?
OpenStudy (anonymous):
ok you started with
\[x^2+6x=7\] when you complete the square as you have been doing you get
\[x^2+6x+9\] but you have to add \(9\) to the right as well
so it is
\[x^2+6x+9=7+9\\
(x+3)^2=16\]
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OpenStudy (anonymous):
then it is a snap to solve
\[(x+3)^2=16\\x+3=4,x+3=-4\\
x=1,x=-7\]
OpenStudy (anonymous):
i see said the blind man
OpenStudy (anonymous):
to his deaf wife over the disconnected telephone as he stuck his head out of the closed window to see if it was raining
OpenStudy (anonymous):
you can really go right from
\[x^2+6x=7\] to
\[(x+3)^2=7+9\] if you like
OpenStudy (anonymous):
i am tired
want to try one more?
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OpenStudy (anonymous):
so for x^2-2x=2
x^2-2x+1=2+1
(x^2+2)^2=3?
I think I just confused myself
OpenStudy (anonymous):
everything good but the last line
OpenStudy (anonymous):
\[(x-1)^2=3\]
OpenStudy (anonymous):
?
OpenStudy (anonymous):
\[x^2-2x=2\\
x^2-2x+1=2+1\\
(x-1)^2=3\]
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OpenStudy (anonymous):
just like
\[x^2+6x=7\\
x^2+6x+9=7+9\\
(x+3)^2=16\]
OpenStudy (anonymous):
just foiled out the (x-1)^2 part , I don't know why but it threw me off.
Anyway, I don't know how else to thank you, you've been very helpful. Also, sorry for hogging you @satellite73 goodnight!