Question

SE a=16 e x=1,25,quanto vale a elevado a x?

Answer 1

$a=16;\qquad\qquad\qquad\qquad\qquad{x}=1{,}25\\\\\\a^x=16^{1{,}25}\\\\a^x=16^{\frac{125}{100}}\\\\a^x=16^{\frac{5}{4}}\\\\a^x=\sqrt[4]{16^5}\\\\a^x=\sqrt[4]{(2^4)^5}\\\\a^x=\sqrt[4]{(2^5)^4}\\\\a^x=2^5\\\\\boxed{\boxed{a^x=32}}$

Answer 2

veja
a=16
a=2^4

x=1,25
x=125/100
x=5/4

a^x=
[(2^4)^5/4]=
[(2)^5]=
32