What is the whole number value of n?

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asked Sep 5, 2018 119k views

1 Answer

Linlin · Answer 1 · 2018-09-09T17:28:02+0000

13^2 + 2 * 13 * n + n^2 = 18^2
169 + 26n + n^2 = 324
26n + n^2 = 324 - 169
26n + n^2 = 155
n^2 + 26n - 155 = 0
(n - 5)(n + 31) = 0

n - 5 = 0
n = 5

n + 31 = 0
n = -31.....not this one because it is negative

so n = 5 <===

What is the whole number value of n?

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