Question

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Answer 1

The equation holds true if and only if
(2x - 4) = 0
or
(2x - 1) = 0
From the first equation, we have x = 2. From the second, we have x = 1/2.

Answer 2

whenever multiple of two or more than two brackets or variable equal to zero (as in this questions) then always call them zero separately.

2x-4=0 and 2x-1=0

now find the value of x
good luck.