Three students were asked to rewrite the expression 24x3 + 36x5 using a common factor. The rewritten expressions are shown in the table.


Student A Student B Student C
2x2(12x + 18x3) 6x3(4 + 6x2) 9x3(3 + 4x2)


Part A: Did Student A rewrite the expression correctly using a common factor? Explain. (3 points)

Part B: Did Student B rewrite the expression correctly using a common factor? Explain. (3 points)

Part C: Did Student C rewrite the expression correctly using a common factor? Explain. (3 points)

Part D: Rewrite the expression using a different common factor than what is shown in the table. Choose a common factor that includes a coefficient other than 1 and a variable. Show every step of your work. (3 points)