Solve this quadratic equation. x2 + 5x + 3 = 0

Question

Solve this quadratic equation.
x2 + 5x + 3 = 0

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Natalia 2 days 2021-09-09T15:35:37+00:00 2 Answers 0

Answers ( )

    0
    2021-09-09T15:36:37+00:00

    Answer:

    The answer is actually x = \frac{-5+\sqrt{13} }{2} or x = \frac{-5 -\sqrt{13} }{\ {2} }

    Step-by-step explanation:

    We have the given equation:

    x^{2} + 5x + 3=0

    • We have to use the quadratic formula in order to solve.

    x = \frac{-b +or-\sqrt{b^{2}- 4ac }  }{2a}

    + or – in this formula stands for the symbol ±

    • Given this formula:

    x^2 + 5x + 3 = 0

    a = 1

    b = 5

    c = 3

    • Plug it in:

    x = \frac{-5+or-\sqrt{5^{2}-4(1)(3) } }{2(1)} \\\\x = \frac{-5+or-\sqrt{25-12} }{2} \\

    Solution:

    x = \frac{-5+or-\sqrt{13} }{2}

    This is as far as it can be simplified.

    0
    2021-09-09T15:37:12+00:00

    Answer:

    Step-by-step explanation:

    2x+5x+3=0

    7x+3=0

       -3   -3

       =0  =-3

    7x=-3

    -3/7=-0.42857142857

    x=-0.42857142857

    I think it is right

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