X(x+2)=3 помогите решить
X²+2x=3 x²+2x-3=0 D = 4-4*1* (-3) = 4-4 * (-3) = 4+12 = 16 x1 = -2+4/2 = 1 x2 = -2-4/2 = -3 Ответ = 1 и -3