Question

$x { }^{2} - x - 6 = 0$

Answer 1

$x {}^{2} - x - 6 = 0 \ d = 1 {}^{2} + 4 times 6 = 1 + 24 = 25 \ sqrt{25} = 5 \ x1 = frac{1 - 5}{2} = frac{ - 4}{2} = - 2 \ x2 = frac{1 + 5}{2} = frac{6}{2} = 3$