The task is to generate the correct answer for a given math problem.

[EX Q]: Problem: what is the range of all the roots of | x ^ 2 - 4 | = x ?
[EX A]: 3

[EX Q]: Problem: a square with sides of 15 units each . what would be the area of the square . consider a square as a combination of two right angled triangles .
[EX A]: 225', 'd ) 81', 'e ) 144'

[EX Q]: Problem: if $ 5,000 is invested in an account that earns 4 % interest compounded semi - annually , then the interest earned after one year would be how much greater than if the $ 5,000 had been invested at 8 % simple yearly interest ?
[EX A]:
$ 4