Question

(1/9a + 1/3a ) a^/8 при a=9

Answer 1

(1/9x9+1/3x9)9^2/8
(1/81+1/27)81/8
$(frac{1}{81} + frac{3}{81} ) frac{81}{8}$
4/81x81/8=1/4=0,5