Which expression represents the product logb(x)+logb(y)\log_b(x) + \log_b(y)logb(x)+logb(y)?
logb(x+y)\log_b(x + y)logb(x+y)
logb(x⋅y)\log_b(x \cdot y)logb(x⋅y)
logb(xy)\log_b(x^y)logb(xy)
logb(x)⋅logb(y)\log_b(x) \cdot \log_b(y)logb(x)⋅logb(y)