st {log 2 to d base }whole square = log 2 to d base x
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log2 to the base root x = 2log2 to the base x
{2log2 base x}² = log2 base x
4(log2 base x)² - log2 base x = 0
log2 base x (4log2 base x - 1) = 0
4log2 base x - 1 = 0
log2 base x = 1/4
x^1/4 = 2
x = 2^4 = 16
or
log2 base x = 0
x^0 = 2
1= 2 which is not possible
hence x = 16
{2log2 base x}² = log2 base x
4(log2 base x)² - log2 base x = 0
log2 base x (4log2 base x - 1) = 0
4log2 base x - 1 = 0
log2 base x = 1/4
x^1/4 = 2
x = 2^4 = 16
or
log2 base x = 0
x^0 = 2
1= 2 which is not possible
hence x = 16
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