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Answer:
5 / 16
Step-by-step explanation:
x² - 2x - 8 = 0
x² - 4x + 2x - 8 = 0
x(x - 4) + 2(x - 4) = 0;
(x - 4)(x + 2) = 0
Hence, x = 4, ( -2 )
Now, 1 / 16 + 1 / 4 = 5 / 16