Решить (x+1)(x^2-10x+25)=7(x-5)
(x+1)*(x²-10x+25)=7*(x-5) (x+1)*(x-5)²-7*(x-5)=0 (x-5)*((x+1)*(x-5)-7)=0 x-5=0 x₁=5 (x+1)*(x-5)-7=0 x²-4x-5-7=0 x²-4x-12=0 D=64 x₂=6 x₃=-2. Ответ: x₁=5 x₂=6 x₃=-2.