anonymous
  • anonymous
Solve x2 + 4x − 4 = 0. x equals the quantity of negative 2 plus or minus square root 16 all over 2 x equals negative 4 plus or minus square root 2 x equals negative 2 plus or minus 2 square root 2 x equals the quantity of 4 plus or minus square root 18 all over 2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
okay so you have to isolate x do you know how to do that?
anonymous
  • anonymous
not really
anonymous
  • anonymous
@scenemunster its C

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anonymous
  • anonymous
Use the quadratic formula.\[\huge~\rm~x=\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\]
anonymous
  • anonymous
yep ^^
anonymous
  • anonymous
im stuck at \[-4 \pm \sqrt{\frac{ 32 }{ 2 }}\]
anonymous
  • anonymous
ôkay welll to start of you have to divide the entire -4+/-srt(32) by 2 not just the 32 in the square root after that you simply simplify
anonymous
  • anonymous
i got c
anonymous
  • anonymous
Which of the following is a solution of x2 + 2x + 8? 4 + i times the square root of 7 −1 + i times the square root of 7 1 + i times the square root of 7 −4 + i times the square root of 7
anonymous
  • anonymous
im stuck on this one i got to \[-2\pm \sqrt{\frac{ 36 }{ 2 }}\]
anonymous
  • anonymous
You add 32 and 4. :D Continue. |dw:1438728318711:dw|
anonymous
  • anonymous
and then that came out to what i put. that's the part that im stuck on CX
anonymous
  • anonymous
4-32 is not 36...
anonymous
  • anonymous
oh its -28

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