If both \(x - 8\) and \(x - \frac{1}{8}\) are factors of \(px^2 + 65x + r\), show that \(p = r\).
Proof:
Comparing the coefficients of \(x^2\)
Comparing the constant terms
From the above two equations, we get
\(p = r\)
Hence proved.
[Note: Enter '\(+\)', \(-\)' or '\(=\)' sign if necessary.]