Question

Se $10 ^{2,5} = a, calcule 10 ^{3,5}$

Answer 1

$10^{2,5}=10^{\frac{5}{2}}=a\\ \\ 10^{3,5}=10^{\frac{7}{2}}=10^{(1+\frac{5}{2})}=10.10^{(\frac{5}{2})}=\boxed{10a}$