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13 August, 18:34

Determine whether the trinomial is a

perfect square. If so, factor it. If not,

explain why.

16. 81n2 + 90n + 100

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Answers (1)
  1. 13 August, 18:41
    0
    Step-by-step explanation:

    Use (a+b) ² = a²+2ab+b² formula

    We can see that a²=81n² (so a=9n) and b²=100 (so b=10) and 2ab = 2*9n*10=180n.

    therefore only √ (81n²+180n+100) would be perfect square and this - isn't.
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