Question

how do you find the excluded values of
a^2+16a=63/a+7

Answer 1

excluded values are values that make the equation 'undefined'. which usually means there is a 0 in the denominator of a fraction

Answer 2

but later on in math it means where the domain is undefined for a given function

Answer 3

if that a+7 is part of the bottom of a fraction; the when a = -7, we get a bad number.