Question

rozwiąż x^4 + 5x^3= x^2 + 5x

Answer 1

x^3(x+5)=x(x+5)

x^3(x+5)-x(x+5)=0

(x+5)(x^3-x)=0

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

x(x+5)(x+1)(x-1)=0

x=0 x=-5 x=-1 x=1