Refer the attachment for your answer :)
Answer:
14x^3+39x^2+18x+20
Step-by-step explanation:
Answer: (v + 7)(v -3)
(v +7)(v -3)
v x v = v^2
v x -3 = -3v
7 x v = 7v
7 x -3 = -21
v^2 -3v +7v -21 = v^2 +4v -21 = 0
