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6 August, 17:27

Find the value of c that makes the trinomial a perfect square.

x2+8x+c

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Answers (1)
  1. 6 August, 21:00
    0
    c=16

    Step-by-step explanation:

    hello:

    x2+8x+c is the perfect square means : x²+8x+c = (x+a) ²

    x²+8x+c = x²+2ax+a²

    so : 2a=8

    c=a²

    a=8/2 = 4 but : c = a²

    conclusion : c=16
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