RE: Math Contest #17 [1 SBI]
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I agree with @sparkesy43, because after taking n8 it turns into
4n2 - 2n - 1 = 0
and, there is no way to make it zero with any positive or negative number.
So, the correct answer is "n = 0".
0
0
0.000
That's wrong.
There are two solutions for
4n² - 2n - 1 = 0They just aren't integers, that's why you didn't find them.
Hahaha ... It gets interesting ... My mathematical skills got rusty. I didn't even think about the quadratic formula, last time used it in mid 90's, I think.
Two solutions are
(1+sq.rt(5))/4 & (1-sq.rt(5))/4where, a = 4, b = -2 & c = -1