Question

Resolva a equação do 2 grau : 2 x ² -50 =0​

Answer 1

$2 x ² -50 =0 \\ {x}^{2} - 25 = 0 \\ {x}^{2} = 25 \\ x = \frac{ + }{} 5 \\ x= - 5 \\ x = 5 \\ x1 = - 5 \: \: \: \: \: x2 = 5$

Answer 2

$2 {x}^{2} - 50 = 0 \\ {x}^{2} - 25 = 0 \\ (x - 5) \times (x + 5) = 0 \\ x - 5 = 0 \\ x + 5 = 0 \\ x = 5 \\ x = - 5 \\ x1 = - 5 \: \: \: \: \: \: x2 = 5$