Ell
  • Ell
Solve the equation by using the quadratic formula: 4b^2 + 8b = 4
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
first, get the equation into standard form: \(\ ax^2+bx+c=0 \), where a, b, c are real #s can you do that for me?
Ell
  • Ell
4x^2 + 8x + 3 = 0...?
anonymous
  • anonymous
where did that "+3" come from? check your algebra...

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Ell
  • Ell
haha(: sorry, i mixed 2 prob. up. My fault:P + 4 instead
anonymous
  • anonymous
check it again... shouldn't it be " - 4" ??? so \(\ 4b^2 + 8b -4 = 0 \) ok???
Ell
  • Ell
mmkay, b/c of the positive and negative... got it. Thanks!
KenLJW
  • KenLJW
4b^2 + 8b + 4 = 0 b^2 + 2b + 1= 0 quadratic equation x^2 + bx +c = 0 x = (-b/2)(1 +- sqrt(1-c(2/b)^2) Therefore b=-1(1+-sqrt(0) = -1, -1 (b+1)^2 = 0
Ell
  • Ell
yeah, ive got it now:) Thanks everyone for all your help@ Much appreciated! GBU!! <3 :)
anonymous
  • anonymous
ok... so can you identify these for me? a = ??? b = ??? c = ???
KenLJW
  • KenLJW
yes my form is used in engineering

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