On a recent test, Shawna was given the following problem:

25m
7m
a
Shawna's work is shown below:

Step 1: a2+72=252


Step 2: a2+14=50


Step 3: a2=36


a=6 m


In which step did Shawna make an error?

(1 point)
Responses

Step 4. She incorrectly solved for a
Step 4. She incorrectly solved for A

Step 3. She incorrectly isolated a2
Step 3. She incorrectly isolated A squared

Step 2. She incorrectly squared the numbers.
Step 2. She incorrectly squared the numbers.

Step 1. She incorrectly applied the Pythagorean theorem.