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15 May, 12:03

What are 2 numbers when multiplied get 4 and when added get 10

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  1. 15 May, 12:09
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    Let x and y will be your two numbers.

    x + y = 4

    xy = 10

    x + y = 4

    y = 4-x

    xy = 10

    x (4-x) = 10

    4x - x² = 10

    - x² + 4x - 10 = 0

    (a + √a² - 4b) / 2

    (4 + √4² - 4 (-10)) / 2

    (4 + √16 + 40) / 2

    (4 + √56) / 2

    (4 + 2√14) / 2

    2 (2 + √14) / 2

    2 + √14

    (4 - 2√14) / 2

    2 (2 - √14) / 2

    2 - √14
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