Answer:
B.
Explanation:
Area of the shaded region = Total Area- Area of the unshaded region
= [(3x + 2) x (x+1)] - [(x-1) x 4]
= (3x^{2} + 5x + 2) - (4x-4)
= 3x^{2} +5x +2 -4x + 4
=3x^{2} + x + 6
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