tmoat1 tmoat1
  • 24-10-2018
  • Mathematics
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What substitution should be used to rewrite 4x^4-21x^2+20 =0 as a quadratic equation

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wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 24-10-2018

I would substitute y = x^2

4y^2 -21y+20=0

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