Final answer:
The expression (m²n⁴)⁴ simplifies to m⁸n¹⁶.
Step-by-step explanation:
To simplify the expression (m²n⁴)⁴, we need to raise each term inside the parentheses to the power of 4.
For m², we have (m²)⁴ = m² * m² * m² * m² = m⁸, as we multiply the exponents when raising a power to a power.
Similarly, for n⁴, we have (n⁴)⁴ = n⁴ * n⁴ * n⁴ * n⁴ = n¹⁶.
Therefore, the expression (m²n⁴)⁴ simplifies to m⁸n¹⁶.