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23 April, 02:11

A positive integer is 47 more than 9 times another. Their product is 1860. Find the two integers.

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  1. 23 April, 02:37
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    X = 47 + 9y

    xy = 1860

    y (47 + 9y) = 1860

    47y + 9y² = 1860

    9y² + 47y - 1860 = 0

    > using a quadratic equation solver on a calculator but you can also use the quadratic equation = [-b + / - √ (b²-4ac) ] / (2a)

    > only integer solution is x = 12

    12y = 1860

    y = 155

    integers are 12 and 155
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