Fraction or irrational

If you double 1/4 of a certain fraction and multiply it by that fraction, the answer is 1. What is the fraction?

Correct answer:

x =  1.4142

Step-by-step explanation:

2 x/4 x=1  2 x/4 x=1 0.5x21=0 x1,2=±1/0.5=±1.414213562 x1=1.414213562 x2=1.414213562 x=x1=1.4142=2

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