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What is the answer to p2+14p-38=0

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  1. 8 May, 05:49
    0
    p = - 7 ±√87

    Step-by-step explanation:

    p2+14p-38=0 would be clearer if written as p^2+14p-38=0: use " ^ " for exponentiation.

    Let's "complete the square" to solve this quadratic equation:

    Taking half of the coefficient of the p term, which is 14, yields 7.

    Squaring this result yields 49.

    Add this 49 to p^2 + 14p and also add 49 to the right side, obtaining:

    p^2 + 14p + 49 - 38 = 49

    Rewriting p^2 + 14p + 49 as a perfect square, we get:

    (p + 7) ^2 = 87

    Let's now find p. Take the square root of both sides, obtaining

    p + 7 = ±√87

    Isolate p by subtracting 7 from both sides:

    p = - 7 ±√87

    These are the "solutions" or "roots" or "zeros" of p^2+14p-38=0.
  2. 8 May, 06:13
    0
    2p+14p=38

    16p = 38

    p = 38/16

    p = 2.375
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