<p>By inserting parentheses, it is possible to give the expression</p> <p><img alt="\[2\times3 + 4\times5\]" height="14" src="https://latex.artofproblemsolving.com/5/7/4/5749b941fd5ab876b3610ecff97cfbbf6ffd4981.png" width="102" /></p> <p>several values. How many different values can be obtained?</p>