anonymous
  • anonymous
Solve the quadratic equation. 8x^2 + 16x + 8 = 0
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
I know how to do this the "plug and play" method, but can someone teach me how to do it when it;s NOT multiple choice? Thanks!
anonymous
  • anonymous
take out 8 and it gives you 8(x^2+2x+1)
anonymous
  • anonymous
okay........

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anonymous
  • anonymous
factor out x^2+2x+1
anonymous
  • anonymous
how?
anonymous
  • anonymous
(x+___)(x+___)
anonymous
  • anonymous
think of two numbers that gives you 2 ehrn you add and gives you 1 when you multiply
anonymous
  • anonymous
1 and 1
anonymous
  • anonymous
good then, thats 8(x+1)(x+1)
anonymous
  • anonymous
okay
anonymous
  • anonymous
divide it by 8 to eliminate 8
anonymous
  • anonymous
then it will be (x+1)(x+1)=0
anonymous
  • anonymous
okay
anonymous
  • anonymous
so x=-1
anonymous
  • anonymous
because x+1=0?
anonymous
  • anonymous
yep
anonymous
  • anonymous
ohhhh ok thanks!

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