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28 October, 19:43

Simplify (x+4) ^2 how is this simplified

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Answers (2)
  1. 28 October, 22:16
    0
    Is known that

    (a + b) ² = a² + 2. a. b + b²

    So:

    (x + 4) ² = x² + 2. x. 4 + 4² = x² + 8x + 16
  2. 28 October, 22:26
    0
    Answer: x^2 + 8x + 16

    Explanation:

    each term in the second bracket must be multiplied by each term in the first bracket

    ⇒ (x + 4) ^2 = (x+4) (x+4) ⇒ (x+4 (x+4)

    =x (x+4) + 4 (x+4)

    = (x*x) + (x*4) + (4*x) + (4*4)

    =x2+4x+4x+16

    =x^2+8x+16

    That's all
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