anonymous
  • anonymous
Solve each problem by using the quadratic formula. Write solutions in simplest radical form. 2x2 – 2x – 1 = 0
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
|dw:1433026832872:dw|
anonymous
  • anonymous
@jagr2713 are you there?
pooja195
  • pooja195
List abc values

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pooja195
  • pooja195
Then plug it in \[\huge~x=\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a } \]
jagr2713
  • jagr2713
Well @pooja195 is helping you lol sorry was trying to type that equation in the equation box but was having difficulty lol
anonymous
  • anonymous
@jagr2713 what do i do next, i kinda got confused!:)
anonymous
  • anonymous
@mathmate
anonymous
  • anonymous
@welshfella @danial.sheikh
jagr2713
  • jagr2713
ok orry u still here
anonymous
  • anonymous
yes, i had to log back in srry!
anonymous
  • anonymous
@jagr2713
jagr2713
  • jagr2713
In this case, a=2, b=−2 and c=−1. so plug into the equation above
anonymous
  • anonymous
okay!
anonymous
  • anonymous
what equation?
jagr2713
  • jagr2713
\[x=\frac{ -b \pm \sqrt{b ^{2}-4ac} }{ 2a }\]
anonymous
  • anonymous
option c is correct
anonymous
  • anonymous
im so confused!
anonymous
  • anonymous
@jagr2713
jagr2713
  • jagr2713
@danial.sheikh this is your second warning
anonymous
  • anonymous
what? i dont understand?
anonymous
  • anonymous
im in between a and c?
jagr2713
  • jagr2713
Giving direct answers is against our CoC http://openstudy.com/code-of-conduct
jagr2713
  • jagr2713
So we have a=2, b=−2 and c=−1. so plug it into the equation
anonymous
  • anonymous
sorry i didn't knew about that
jagr2713
  • jagr2713
Its ok :D Just dont do it again :D
anonymous
  • anonymous
\[-b+-\sqrt{b ^{2}-4ac}/2a\] use this next time
anonymous
  • anonymous
in this q ur b is -2 , a is 1 and c is -1
anonymous
  • anonymous
sorry a is 2
anonymous
  • anonymous
okay so c is correct?
anonymous
  • anonymous
solve ur self now
anonymous
  • anonymous
what what?
anonymous
  • anonymous
can you help with more questions?
anonymous
  • anonymous
just use the equation above

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