Question

If f(x) = 9^x , them prove that : f(m+n+p) = f(m) × f(n) × f(p) .​

Answer 1

f(m+n+p) = 9^(m+n+p)

while f(m) × f(n) × f(p) = 9^m+9^n+9^p = 9^(m+n+p)

so the second property explains why it's a + instead of ×