14-9
1.17
x+1*3x
2 to the power of 4x add 2 to the power of 2x=2 to the power of 8
{- 15 +2 + [12 -5]} – ( 18 – 18 +7) =
f(x)=3x-x^2
– {23 -17 –[- 12 +15 – ( - 2 +4 -8)] +23}
15 + x = -15
1 + 2 / (x+1) es menor o igual que 2/x
\sqrt(16+\sqrt(20\sqrt(20\sqrt(20)....\infty )))
