(4, 16)
(2, 4)
(4, 1)
(1, 16)
(16, 16)
Correct answer is A
x + 2√x−8=0,Let√x=y
x = y2
y2+2y - 8 = 0
(y + 4)(x - 2) = 0
y = -4 or 2
x = 16 or 4
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