Question

Розв'язати рівняння x^2+x=(x+3)(3x-2)-2

Answer 1

${x}^{2} + x = {3x}^{2} - 2x + 9x - 6 - 2 \\ {x}^{2} + x - {3x}^{2} + 2x - 9x + 8 = 0 \\ { - 2x}^{2} + 6x + 8 = 0 \\ {x}^{2} + 3x + 8 = 0 \\ {x}^{2} + 4x - x - 4 = 0 \\ (x + 4)(x - 1) = 0 \\ x1 = - 4 \\ x2 = 1$