∆ABC ~ ∆HJK and ∆HJK ~ ∆XYZ. Furthermore, the ratio between the sides of ∆ABC and ∆HJK is a : b. Finally, the ratio of the sides between ∆HJK and ∆XYZ is b : a. What can you conclude about ∆ABC and ∆XYZ? Explain.

Rena used the steps below to evaluate the expression , when . step 1: substitute into the expression. step 2: simplify the parentheses. step 3: evaluate the power to a power. step 4: use reciprocals and find the value. in which step did rena make the first error?