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20 June, 10:49

What is the answer to 4a squared minus 16a = negative 15

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  1. 20 June, 13:34
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    4a^2 - 16a = - 15

    4a^2 - 16a + 15 = 0

    (2a - 3) (2a - 5) = 0

    Now separate the two individual equations, set to zero, and solve ...

    2a - 3 = 0

    2a = 3

    a = 3/2

    2a - 5 = 0

    2a = 5

    a = 5/2

    Your answers are

    3/2 and 5/2
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