For each of the WeBWorK phrases below enter a T (true) if the two given phrases describe the same algebraic expression and a F (false) otherwise. One way you can decide whether the phrases are equivalent is to substitute specific values for $a$, $b$, etc. If you get two different results the two phrases are certainly not equivalent. If you get the same values there is small chance this happened accidentally for just that choice of particular values. In any case, pay close attention to when these phrases are equivalent and when they are not, it will help you tremendously with future WeBWorK assignments.
$a+b^2$ $(a+b)^2$

$a^2+b^2$ $(a + b)^2$

$a*b*c$ $a*(b*c)$

$a/b/c$ $a/(b/c)$