x² · y⁴ · x³ 

= x² · x³ · y⁴               (Apply commutative property of multiplication: a × b = b × a)

Since base is common,apply the product of powers property: a^m·aⁿ= a^{m + n}.

= x⁵ · y⁴                      (Add exponents: 2 + 3 = 5)

The product of  x² · y⁴ · x³  is x⁵y⁴.