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11 August, 01:37

The area of a poster board is (x^2+3x-10) square inches. Find the dimensions of the poster board if x=14

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  1. 11 August, 01:45
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    Just substitute 14 for x.
  2. 11 August, 02:04
    0
    14^2+3*14-10=228in^2

    if the poster board is given as a square you can find the sides by taking the square root of 228 to find that each side is about 15.1 inches long.
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