anonymous
  • anonymous
The area of a football field is x2 + x - 42. Find the length and width of the field in terms of x.
Mathematics
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
i think just solve for x an the larger value for x is the length and the smaller one is the width. you need to find two numbers that when mupltied together = -42 and when added together = 1. (factoring)
anonymous
  • anonymous
So It Would Be (x - 7) and (x + 6)
anonymous
  • anonymous
yeah but now that i look at that you can't have a negative length or width. ummm. forget what i said. give me a second

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anonymous
  • anonymous
ok
anonymous
  • anonymous
okay um. A = L*W = x^2+x-42 so the only thing i can think of to write the length in terms of x and the width in terms of x is to go L=( x^2+x-42)/W then do the same for the width. I'm not sure if that's right but that's the best i got
anonymous
  • anonymous
ok thanks tho

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