Question

se a=25 e x=0,5 quanto vale a^x
a=√5
b=2√5
c=0,25
d=5
e=25

Answer 1

Boa noite Andre

a = 25 , x = 1/2

25^(1/2) = √25 = 5 (D)

Answer 2

Resolução da questão, veja:

Alternativa “D” é a correta, observe:

$\mathtt{a^{x}}~\to~\mathtt{a=25~\textsf{e}~x=0,5~\textsf{ou}~x=\dfrac{1}{2}}}}}}\\\\\\\\\ \mathtt{a^{x}=25^{^{\frac{1}{2}}}}}\\\\\\\\\ \mathtt{a^{x}=\sqrt{25}}}}\\\\\\\\\\ \Large\boxed{\boxed{\boxed{\mathbf{a^{x}=5.}}}}}}}}}}}}}}}}}}}}}}}}}}$

Espero que te ajude. '-'