Final answer:
To simplify the expression, apply the rules of multiplying and combining exponents. Some expressions can be simplified further while others cannot.
Step-by-step explanation:
To simplify the expression using properties of exponents, you need to apply the rules of multiplying and combining exponents.
a. 5ab⁷ = 5a⁸b⁷ (since multiplying the bases with the same exponent adds the exponents)
b. 5a⁹b⁹ = 5a⁹b⁹ (cannot be simplified further)
c. a⁵b⁷ = a⁵b⁷ (same as the original expression, cannot be simplified further)
d. 5a⁹b⁷ = 5a⁹b⁷ (cannot be simplified further)