anonymous
  • anonymous
Solve. 2x2 + x = 15.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
is that 2x squared?
anonymous
  • anonymous
Yes sir!
anonymous
  • anonymous
so -3 is one solution, still working on the other

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More answers

anonymous
  • anonymous
ya
anonymous
  • anonymous
\[2x^2+x=15\]-15 -15\[2x^2+x-15=0\] I get this far, then I can't get it to foil. It should be able to go into a (2x-a)(x+b) format, but a and b won't add up.
anonymous
  • anonymous
@above some quadratic equations cannot be factored :)
anonymous
  • anonymous
Quadratic Formula! Of course!
anonymous
  • anonymous
so we use the quadratic formula, or synthetic division since i already got one solution
anonymous
  • anonymous
(-b +- sqrt(b^2-4ac))/2a
anonymous
  • anonymous
ill use synthetic you use formula see if we get same answer
anonymous
  • anonymous
it has a remainder in synth div.
anonymous
  • anonymous
I got\[x=2.5,-3\]
anonymous
  • anonymous
same here
anonymous
  • anonymous
whoaaa i was way off thank you guys so much this is one amazing website! thank you sooo much for putting your time and effort i really appreiciate it!
anonymous
  • anonymous
No problem
anonymous
  • anonymous
;D

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