CPM Homework Help : CCA2 Problem 3-47

Look back at the expressions in problem 3-46 that are not equivalent. Are there any values of the variables that would make them equal? Justify your reasoning.

Hint:

For parts (d) and (f), try setting the two expressions equal to each other,
simplifying, and explaining the meaning of the results.

Answer 1:

In part (d), the values $a=0\ \text{or}\ b=0$ would make the two expressions equal.
In part (f), the two expressions are equal when $x=5$ .

More Help:

In part (e), $x\ne0$ because division by $0$ is undefined.

Answer 2:

$x=1$ will make the expressions equal.