Answer:
D
Step-by-step explanation:
y=2sqrt(x-6)
x-6=0
+6 +6
{6,inf) U(0,inf)
A = x^2 + 5x - 14
A = L × W
A = (x+7) × (x-2)
A = x^2 + 7x - 2x - 14
proved
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