Question

me ajude apenas quero o calculo dou 5 estrelas​

Answer 1

$a)\ 8^2=8\cdot8=64\\\\b)\ (-13)^2=(-13)\cdot(-13)=169\\\\c)\ (-7)^2=(-7)\cdot(-7)=49\\\\d)\ (-0,9)^1=-0,9\\\\e)\ 5^2=5\cdot5=25\\\\f)\ (3,2)^2=3,2\cdot3,2=10,24\\\\g)\ -15^2=-15\cdot15=-225\\\\h)\ \Big(-\frac{2}{3}\Big)^5=\Big(-\frac{2}{3}\Big)\cdot\Big(-\frac{2}{3}\Big)\cdot\Big(-\frac{2}{3}\Big)\cdot\Big(-\frac{2}{3}\Big)\cdot\Big(-\frac{2}{3}\Big)=-\frac{32}{243}\\\\i)\ (-3)^4=(-3)\cdot(-3)\cdot(-3)\cdot(-3)=81$