Answer:
Option A 12x^4 + 12x^3 + 26x^2 + 8x + 12
Step-by-step explanation:
1) Find area of Shape A
(3x^2 + 2) (7x^2 + 4x + 8)
With distribution method, you get
21x^4 + 12x^3 + 38x^2 + 8x + 16
2) Find area of shape B
(3x^2 + 2) (3x^2 + 2)
With distribution method, you get
9x^4 + 12x^2 + 4
3) Subtract area of Shape B from Shape A
21x^4 + 12x^3 + 38x^2 + 8x + 16
-9x^4 -12x^2 -4
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12x^4 + 12x^3 + 26x^2 + 8x + 12
