Question

Me ajudemmmmm alguém???

Answer 1

a) (-3)² - (-3)² = 9 - 9 = 0
$b) -(-2)^{4} + (-2) ^{5} . 4^{-3}$
-16 + (-32) . 1/64
-16 - 32 .1/64
-48 . 1/64 = -0,75
c)$(4^{0} : 4^{-1} ) : ( 4^{-1} : 4^{-2} )$
(4¹) : (4¹) = 1
d)$\frac{(-1)^{5}}{(-2)^{-2} + (0,1)^{-2} }$
$\frac{-1}{ (\frac{1}{-2})^2 + (\frac{1}{0.1})^{2} }$
$\frac{-1}{\frac{1}{4} + \frac{1}{0.01} }$
$\frac{-1}{ \frac{1 + 400}{4} }$
$\frac{-1}{ 101 }$
d)$(-\frac{1}{3})^2 - (-\frac{1}{3})^{-2}$
$(-\frac{1}{9}) - (-\frac{3}{1})^{2}$
$(-\frac{1}{9}) - (-\frac{9}{1})$
$-\frac{1}{9} + \frac{9}{1}$
$\frac{-1 + 81}{9} = \frac{80}{9}$