Question

calculati a)(-2)^-1+2^-3 b) (radical 3)^-1+(-radical 3)^-3 c) (radical 4+ radical 5)^-1+(radical 5+ radical 9)^-1
Dau coroanaa
Va rog
Este urgent

Answer 1

a)
$( - 2) {}^{ - 1} + 2 {}^{ - 3} =$
$- 2 {}^{ -1} + \frac{1}{2 {}^{3} }$
$- \frac{1}{2} + \frac{1}{8} =$
$- \frac{3}{8}$