Question

решите уравнение х^2+4х-12=0​

Answer 1

${x}^{2} + 4x - 12 = 0 \\ {x}^{2} + 6x - 2x - 12 = 0 \\ x \times (x + 6) - 2(x + 6) = 0 \\ (x + 6) \times (x - 2) = 0 \\ \\ x + 6 = 0 \\ x - 2 = 0 \\ \\ x = - 6 \\ x = 2 \\ \\ x1 = - 6 \\ x2 = 2$