Simplify the Expression $2 ^ { 2 } r ^ { - 5 } \left( r ^ { 9 } \right) ^ { 2 }$

question 268

Essay

Simplify the expression. Assume that the variable represents a nonzero real number. Write the answer using a positive exponent only. $2 ^ { 2 } r ^ { - 5 } \left( r ^ { 9 } \right) ^ { 2 }$

---

Definitions:

Disjunction

Disjunction is a logical operation that results in true if at least one of the operands is true; in propositional logic, it's represented by the OR operator.

Event

An occurrence or happening, especially one of significance, that can be observed or participated in.

Dependent

Relies on or is determined by another object, condition, or factor.

Independent Events

Two or more events where the occurrence of one does not affect the probability of the other(s).