Question 671515
y = {{{-(x-2)^2+8}}}
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-8 = {{{-(x-2)^2}}}
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8 = {{{(x-2)^2}}}
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+/- {{{sqrt(4*2)}}} = {{{sqrt(x-2)^2}}}
+/- {{{2sqrt(2)}}}  = x-2
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x = {{{2+2sqrt(2)}}}
x = {{{2-2sqrt(2)}}}
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Intercepts at ({{{2+2sqrt(2)}}},0) and ({{{2-2sqrt(2)}}},0)
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