Bardzo proszę o pomoc
rozłóż wielomian x^5 + 3x^4 - 3x^3 -9x^2 +2x + 6 na czynniki
x^4(x+3)-3x^2(x+3)+2(x+3)=
=(x+3)(x^4-3x^2+2)=
x^2=t
t^2-3t+2=0
Δ=9-8=1 √Δ=1
t1=(3-1)/2=1 , t2=(3+1)/2=2
x^2=1 ∨ x^2=2
x=±1 x=±√2
czyli:
...= (x+3)(x-1)(x+1)(x-√2)(x+√2)
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x^4(x+3)-3x^2(x+3)+2(x+3)=
=(x+3)(x^4-3x^2+2)=
x^2=t
t^2-3t+2=0
Δ=9-8=1 √Δ=1
t1=(3-1)/2=1 , t2=(3+1)/2=2
x^2=1 ∨ x^2=2
x=±1 x=±√2
czyli:
...= (x+3)(x-1)(x+1)(x-√2)(x+√2)