Question

$\frac{x { } ^{2} + 3 }{2} = 1$
$4x {}^{2} - 9 = 4 \: (x - 4x {}^{2} )$
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Answer 1

Explicação passo-a-passo:

$4x {}^{2} - 9 = 4(x - 4x {}^{2}) \\ 4x {}^{2} - 9 = 4x - 16x {}^{2} \\ 4x {}^{2} - 9 - 4x + 16x { }^{2} = 0 \\ 20x {}^{2} - 9 - 4x = 0 \\ 20x {}^{2} - 4x - 9 = 0 \\ ( - 4) {}^{2} - 4 \times 20 \times ( - 9) \\ 16 + 720 \\ 736 \\ \\ x = \frac{4 + 4 \sqrt{46} } {40} \\ \\ x = \frac{4 - 4 \sqrt{46} }{40} \\ \\ x = \frac{1 + \sqrt{46} }{10} \\ \\ x = \frac{1 - \sqrt{46} }{10}$

espero ter colaborado!