Answer:
(x,y) = (x, -2x²+6x+8), X∈R
Explanation:
y= -2x²+6x+8
y=-2(x-4)×(x+1)
-2x²+6x+8= -2(x-4)×(x+1)
x∈R
(x,y) = (x, -2x²+6x+8), x∈R
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