Factor the expression.
n^2-15n+56
A(n+7)(n+8)
B(n+7)(n-8)
C(n-7)(n-8)
D(n-7)(n+8)
n^2-15n+56
A(n+7)(n+8)
B(n+7)(n-8)
C(n-7)(n-8)
D(n-7)(n+8)