решите уравнения 1) x^4+2x^3-11x^2+4x+4=0

2) x^4-2x^3-23x^2+8x+16=0

1) x^4+2x^3-11x^2+4x+4=0

(x-2) * (x-1) * (x^2+5x+2) = 0

x-2=0

x=2

x-1=0

x=1

x^2+5x+2=0

D=5^2-4*1*2=25-8=17

x1=V17/2-2.5

x2=-V17/2-2.5

2) x^4-2x^3-23x^2+8x+16=0

(x-1) * (x+4) * (x^2-5*x-4) = 0

x-1=0

x=1

x+4=0

x=-4

x^2-5x-4=0

D = (-5) ^2-4*1 * (-4) = 25+16=41

x1=V41/2+2.5

x2=-V41/2+2.5