1 and 4
-2 and 2
0 and 1
-1 and 0
Correct answer is C
16x - 5 x 4x + 4 = 0 (4x)2 - 5(4x) + 4 = 0 let 4x = y y2 - 5y + 4 = 0 (y - 4)(y - 1) = 0 y = 4 or 1 4x = 4 x = 1 4x = 1 i.e. 4x = 4o, x = 0 ∴ x = 1 or 0
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