No, the expressions x³. x³. x³ is not equivalent to x³. 3. 3
First, we need to know that equivalent expressions are described as expressions that have the same value but differ in the way in which the variables or numbers are arranged.
From the information given, we have that the expressions are;
x³ . x³.x³
Now, in multiplying powers of index forms, we have to add their exponents since they are have the same base values, we have;
x⁹
However, the expression x³. 3. 3 would give;
9x³
Hence, the expressions are not equivalent