Solve the System of Equations Algebraically for Real Values of X

Multiple Choice

Solve the system of equations algebraically for real values of x and y. $$\left\{ \begin{array} { l } x ^ { 2 } - 8 x - y = - 15 \\x ^ { 2 } - 8 x + y = - 15\end{array} \right.$$

A) $\quad ( 4,0 ) , ( 5,0 )$
B) $\quad ( 0,4 ) , ( 3,0 )$
C) $\quad ( 0,4 ) , ( 0,5 )$
D) $( 3,0 ) , ( 5,0 )$
E) no solution