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algebra

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The perimeter of a square is 12cm greater than that of another square. It's area exceeds the area of the other by 39cm^2. Find the perimeter of each square. I don't get how to set this up.

  • algebra - ,

    let x be the side of the smaller square, area is x^2
    then x+3 must be the side of the larger square.

    (x+3)^2 -x^2=39
    solve for x, and x+3

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