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9 December, 15:15

The product of two consecutive odd integers is 2,115. Find the integers. Which of the following quadratic equations could be used to solve the word problem?

a. x² + x - 2,115 = 0

b. x² + 2x - 2,115 = 0

c. x² + 2x + 2,115 = 0

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Answers (1)
  1. 9 December, 18:51
    +1
    Hello,

    Answer B

    Let x the first number

    x+2 the second

    x * (x+2) = 2115

    ==>x²+2x-2115=0

    ==>x=45 or x=-47

    ==> (x=45 and x+2=47) or (x=47 and x+2=-45)
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