To solve the equation \( \frac{h^{450}}{h^?} = h^{215} \), we can use the property of exponents that states \( \frac{h^a}{h^b} = h^{a-b} \).
So we have:
\[ \frac{h^{450}}{h^?} = h^{450 - ?} \]
Setting this equal to \( h^{215} \), we get:
\[ h^{450 - ?} = h^{215} \]
Since the bases are the same, we can set the exponents equal to each other:
\[ 450 - ? = 215 \]
Now we solve for the missing exponent \( ? \):
\[ 450 - 215 = ? \] \[ ? = 235 \]
Thus, the missing exponent is \( 235 \).