Question

Aflati radacinile reale ale unui polinom:P(X)=X^3-5X^2 6X P(X)=16X^4-64 AAAAAAAAAAAAAAAAAAAAAAAJJJJJJJJJJJJJJJJJJJJJJJJJUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUTTTTTTTTTTTTTTTTTTTOOOOOOOOOOOOOOOOOOOORRRRRRRRRRRRRRR

Answer 1

[tex]16x^4-64=0\_{:16}\Longrightarrow x^4-4=0 \Longrightarrow (x^2)^2-2^2=0 \Longrightarrow (x^2-2)(x^2+2)=0 \Longrightarrow x=\pm\sqrt2[/tex]