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Solve each equation by undoing each operation: 2(x+4)^2 - 7= 0

Mathematics
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(a+b)^2=a^2+2ab+b^2
try that
add, divide, sqrt, subtract

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Other answers:

in order to solve for x, its best not to have a bunch of seperate terms of x
Ok so this is where I am at: |dw:1370954995424:dw|
yep. divide both sides by 2 now.
i personally would do it a different way.
Y divide by 2?
becasue 2/2 = 1
and quadratic formula is not faster ....
haha ^ true
but wiser.
|dw:1370955168617:dw|
we are trying to unwrap the "x" ... its stuck inside alot of excess baggage
Ok so this is where I am: |dw:1370955243877:dw|
Is tht correct?
so far so good, i would not try to decimate that sqrt(7/2) tho .. unless its asking for an approximation
leave it alone .... the fraction is not important
Ok so this then? |dw:1370955496977:dw|
\[x+4=\pm\sqrt{\frac{7}{2}}\] this is an EXACT value, so unless the solution is asking you to decimate it ... leave it as is
^ use that!
now finish off that 4 that keeps tagging along
Oh ok so it's: |dw:1370955725448:dw| Correct?
sweet.
correct
Awesome! Thanks guys! I appreciate it! GBU! :)
\[x=\frac{-8\pm\sqrt{14}}{2}\]is also acceptable i believe
OH QUADRATIC FORMULA! haha
Thanks for being patient with me guys! I appreciate it ;)
good luck
Gracias :))
i'm going to hit the sack now. have fun with maths :) good luck
Thanks you for you help! :)

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