Para a função F(x) 2x-3/5, calcule:A)x-2B)x OC)x6

\[\eqalign{ & f\left( x \right) = 0 \cr & 2x - \dfrac{3}{5} = 0 \cr & 2x = \dfrac{3}{5} \cr & x = \dfrac{3}{{5 \cdot 2}} \cr & x = \dfrac{3}{{10}} }\]

Logo:

a)

\[\eqalign{ & x - 2 = \dfrac{3}{{10}} - 2 \cr & = \dfrac{{3 - 2 \cdot 10}}{{10}} \cr & = \dfrac{{3 - 20}}{{10}} \cr & = \dfrac{{ - 17}}{{10}} }\]

b)

\[x = \dfrac{3}{{10}}\]

c)

\[\eqalign{ & {x^6} = {\left( {\dfrac{3}{{10}}} \right)^6} \cr & = \left( {\dfrac{{729}}{{1.000.000}}} \right) \cr & = 0.000729 }\]