Which of the following expressions represents the product of 3 less than twicexand 2 more than the quantity 3 timesx?

A.–6x2 + 25x+ 6

B.6x2 + 5x+ 6

C.6x2 – 5x+ 6

D.6x2 – 5x– 6

E.6x2 – 13x– 6

Answer is D

How do I solve this?

For all [r is not equal to plus or minus 2], (r squared - 5r + 6) over (r squared - 4 = ?

A. (r - 3) over (r + 2)

B. (r - 2) over (r + 2)

C. (r - 2) over (r + 3)

D. (r + 3) over (r - 2)

E. (r + 3) over (r + 2)

Answer is A

How do I solve this one as well?