Question

a função do 2 grau 2ײ-3-20=0?​

Answer 1

$2x {}^{2} - 3 - 20 = 0 \\ 2 {x}^{2} = 23 \\ {x}^{2} = \frac{23}{2} \\ x = \frac{ \sqrt{23} }{ \sqrt{2} } \times \frac{ \sqrt{2} }{ \sqrt{2} } \\ x = \frac{ \sqrt{46} }{2}$