The answer is D, 7n + 14.
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Substitute answers in, a = 3 and b = 2.
(3^2 - 2^2)/(3+2)
= (9-4)/5
= 5/5
= 1
0/2=0 because anything divided by zero is zero.
Answer:
X=3
y=6
Step-by-step explanation:

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A triangular Prism I would say but it does have rectangles