Final answer:
The expression 75n⁷, assuming n is non-negative, remains as it is because no further simplification is indicated. It means 75 multiplied by n raised to the seventh power.
Step-by-step explanation:
The question asks us to simplify the expression 75n⁷. Since we are assuming that n is greater than or equal to zero, we can apply the exponent rules to simplify the expression. According to the rule that raising a number to a power is the same as multiplying that number by itself as many times as the value of the power, 75n⁷ means 75 multiplied by n raised to the seventh power. There's no indication that further simplification can be done without additional context or constraints. Hence, the simplified expression remains 75n⁷ where n represents any non-negative number.