HelloKitty17
  • HelloKitty17
One solution of the equation 2x2 - x - 10 = 0 is five over two. What is the other solution? Numerical Answers Expected!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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welshfella
  • welshfella
factor the expression
welshfella
  • welshfella
can you do that?
welshfella
  • welshfella
2x2 - x - 10 = 2x^2 + 4x - 5x - 10

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welshfella
  • welshfella
factor the above by grouping
OregonDuck
  • OregonDuck
If you start with 2x2 − x − 10 = 0 and divide everything by 2 to make the leading coefficient 1, you get x^2-(1/2)x-5 = 0 Now it turns out that for something like x^2+bx+c = 0, the two roots/solutions p and q multiply to the last coefficient c. In other words, pq = c Since one root is 5/2, we know that (5/2)q = -5 Now solve for q to get q = -10/5 = -2 So the other root is -2
ali2x2
  • ali2x2
lol
welshfella
  • welshfella
someone nearly always gives the answer when we are trying to get the questioner involved so they can learn something...
OregonDuck
  • OregonDuck
they do i explained it
welshfella
  • welshfella
they would have learned a bit more if you hadn't interfered

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