Question

2 x (-1)2014 + 3 x (-1)2015

(-1) la puterea 2014 /2015

Answer 1

= -2x2014 -3x(2014+1) = -2x2014 - 3x2014 - 3 = -5x2014 - 3 = -10070 - 3 =
-10073
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= 1/2015, ptr ca (-1) la orice putere para este +1
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Answer 2

$2x*(-1) ^{2014}+3x*(-1) ^{2015}=2x*1+3x*(-1)=2x-3x*1=-x$

$\frac{(-1) ^{2104} }{2015} = \frac{ 1^{2014} }{2015}$ ≈ 0.000496278