An error has been made in subtracting the two polynomials as shown in the student work. (6x2 – 4x – 5 ) – (3x2 – 7x + 2)

= 6x2 - 4x - 5 - 3x2 - 7x + 2

= 3x2 - 11x - 3

A.
The answer is correct. No error was made.

B.
The like terms were not combined correctly.

C.
The "negative" was not distributed correctly.

D.
The student should have multiplied instead of combining like terms.