Question

(2) x2 – 3x - 2 = 0 slove using formula ​

Answer 1

${x}^{2} - 3x - 2 = 0 \\ = > {x}^{2} - 2x - x - 2 = 0 \\ = > x(x - 2) + 1(x - 2) \\ = > (x + 1)(x - 2) = 0 \\ \\ x + 1 = 0 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: x - 2 = 0 \\ x = - 1 \: \: \: \: \: \: \: or \: \: \: \: \: \: \: \: \: \: x = 2$