ortizprecious6347 ortizprecious6347
  • 31-12-2017
  • Mathematics
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The product of two consecutive room numbers is 210. find the room numbers

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lesliekolleroxrkcf
lesliekolleroxrkcf lesliekolleroxrkcf
  • 31-12-2017
x(x+1)=210
x²+x-210=0
(x+15)(x-14)=0
x= -15 or 14

since we don't use negative numbers on doors discard-15. room numbers are 14 and 15
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