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28 February, 08:50

The function f (x) = 2x2 + 3x + 5, when evaluated, gives a value of 19. What is the function's input value? The function f (x) = 2x2 + 3x + 5, when evaluated, gives a value of 19. What is the function's input value?

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  1. 28 February, 09:18
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    -7/2 and 2

    Step-by-step explanation:

    First we move the 19 to the left side

    2x^2 + 3x + 5 = 19 becomes 2x^2 + 3x - 14 = 0

    Now we can factor this into (2x+7) (x-2) = 0

    input values are - 7/2 and 2
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