anonymous
  • anonymous
Solve 2x^2 - 20 = 3x.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
THere are many ways my prefer way is to use quadratic formula. Depending on what they want u to use tho they may not like it. BUT 2x2 - 20 = 3x 2x2 - 20 - 3x=0 just subtract 3x from both sides. 2x2 - 3x -20 =0 rearrange now use quadratic equation ax2 + bx +c =0 2x2 - 3x -20
anonymous
  • anonymous
I mean use quadratic formula
anonymous
  • anonymous
https://gfbrandenburg.files.wordpress.com/2011/09/quadratic-formula.jpg

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More answers

anonymous
  • anonymous
2 is a -3 is b -20 is c Can you handle that :)
anonymous
  • anonymous
\[2x^{2}-20=3x\]
anonymous
  • anonymous
\[2x ^{2}-3x-20=0\]
anonymous
  • anonymous
\[2x ^{2}-8x+5x-20=0\]
anonymous
  • anonymous
\[2x(x-4)+5(x-4)=0\] \[\therefore (2x+5)(x-4)=0 \rightarrow x=-2.5 or 4\]

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