Question

determine o valor de cada uma das potências:

a) 25¹
b) 150°
c) (7/9) -²​

Answer 1

$a) \: 25 {}^{1} = \boxed{\boxed{\boxed{25}}} \\ b) \: 150 {}^{0} = \boxed{\boxed{\boxed{1}}} \\ c) \: ( \frac{7}{9} ) {}^{ - 2} = ( \frac{9}{7} ) {}^{2} = \frac{9 {}^{2} }{7 {}^{2} } = \boxed{\boxed{\boxed{ \frac{81}{49} }}}$

att. yrz