Question

Calcule o valor dessas equações

Answer 1

a)

$x = (-\frac{1}{3} )^3 + [ \frac{1}{3} - (- \frac{1}{3} ]^-^2 \\ \\ x = -\frac{1}{27} + [\frac{2}{3}]^-^2 \\ \\ x = -\frac{1}{27} + \frac{9}{4} \\ \\ x = \frac{239}{108}$

b)

$y = \frac{ \frac{1}{4} + 2^2 - \frac{1}{2} }{2^2 - \frac{1}{2} } \\ \\ y = \frac{ \frac{1}{4} + 4 - \frac{1}{2} }{4 - \frac{1}{2} } \\ \\y = \frac{ \frac{1}{4} + \frac{7}{2} }{\frac{7}{2} } \\ \\ y = \frac{ \frac{15}{4} }{\frac{7}{2} } \\ \\ y= \frac{15}{14}$