Question

o valor de x= (-1/3)³ + [3-¹ -(-3)-¹] -²

Answer 1

x = $(- \frac{1}{3}) ^{3}+[ 3^{-1}- (-3)^{-1} ]^{-2}$ ⇒

x = $- \frac{1}{9}+ [\frac{1}{3}+ \frac{1}{3} ]^{-2}$ ⇒

x = $- \frac{1}{9}+[ \frac{2}{3} ]^{-2}$ ⇒

x = $- \frac{1}{9}+[ \frac{3}{2} ]^{2}$ ⇒

x = $- \frac{1}{9}+ \frac{9}{4}$ ⇒

x = $\frac{4.(-1)+9.9}{36}$ ⇒

x = $\frac{-4+81}{36}$ ⇒

x = $\frac{77}{36}$ = $2 \frac{5}{36}$

Espero ter ajudado!