Question

х^2+х-6=0 построить график. Помогите пожалуйста.

Answer 1

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