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



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chris00
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(a+b)^2=a^2+2ab+b^2

chris00
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try that

amistre64
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add, divide, sqrt, subtract

amistre64
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in order to solve for x, its best not to have a bunch of seperate terms of x

e.cociuba
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Ok so this is where I am at:
dw:1370954995424:dw

chris00
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yep. divide both sides by 2 now.

chris00
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i personally would do it a different way.

e.cociuba
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Y divide by 2?

amistre64
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becasue 2/2 = 1

amistre64
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and quadratic formula is not faster ....

chris00
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haha ^ true

chris00
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but wiser.

amistre64
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dw:1370955168617:dw

amistre64
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we are trying to unwrap the "x" ... its stuck inside alot of excess baggage

e.cociuba
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Ok so this is where I am:
dw:1370955243877:dw

e.cociuba
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Is tht correct?

amistre64
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so far so good, i would not try to decimate that sqrt(7/2) tho .. unless its asking for an approximation

amistre64
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leave it alone .... the fraction is not important

e.cociuba
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Ok so this then? dw:1370955496977:dw

amistre64
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\[x+4=\pm\sqrt{\frac{7}{2}}\]
this is an EXACT value, so unless the solution is asking you to decimate it ... leave it as is

chris00
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^ use that!

amistre64
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now finish off that 4 that keeps tagging along

e.cociuba
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Oh ok so it's:
dw:1370955725448:dw Correct?

chris00
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sweet.

amistre64
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correct

e.cociuba
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Awesome! Thanks guys! I appreciate it! GBU! :)

amistre64
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\[x=\frac{8\pm\sqrt{14}}{2}\]is also acceptable i believe

chris00
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OH QUADRATIC FORMULA! haha

e.cociuba
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Thanks for being patient with me guys! I appreciate it ;)

amistre64
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good luck

e.cociuba
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Gracias :))

chris00
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i'm going to hit the sack now. have fun with maths :) good luck

e.cociuba
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Thanks you for you help! :)