Question

X²= ¼X² + ½
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Answer 1

Solução:
${x}^{2} = \frac{ {x}^{2} }{4} + \frac{1}{2} \\ {x}^{2} - \frac{ {x}^{2} }{4} = \frac{1}{2} \\ \frac{3 {x}^{2} }{4} = \frac{1}{2} \\ 3 {x}^{2} = 4 \times \frac{1}{2} \\ 3 {x}^{2} = 2 \\ {x}^{2} = \frac{2}{3} \\ x = \sqrt{ \frac{2}{3} }$