Answers

2016-06-19T08:30:30+08:00
225a^2-16n^2-36...you will multiply it  term by term.

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I don't think it's just simple like that ._.
2016-06-19T09:45:46+08:00
(a + b + c)^2 = a^2 + b^2 + c^2 + 2ab + 2ac + 2bc

(15a - 4n - 6)^2 = (15a)^2 + (-4n)^2 + (-6)^2 + 2(15a)(-4n) + 2(15a)(-6) + 2(-4n)(-6) = 225a^2 + 16n^2 + 36 + 2(-60an) + 2(-90a) + 2(24n) = 225a^2 + 16n^2 + 36 - 120an - 180a + 48n

225a^2 - 120an + 16n^2 - 180a + 48n + 36



Follow the equation above. Substitute a, b, and c, which serves as the terms of the trinomial. Sorry if it's a little bit confusing.
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