ćwiczenia nowa era 2 liceum poziom podstawowy.
rozwiąż równanie
ćw 65 / 26 str
x^5 - 81x=0
4x^5 -x=0
x^5-8x^3+16x=0
4x^5 -4x^3 + x = 0
ćw 66 / 26 str
x^4 -125x =0
x^4-x/27 = 0
8x^5 + x^2 = 0
x^4 + 3x^3 = 3x^3 + x
cw 67/27 str
b ) x^4 + 3x^3 + 6x^2=0
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x^{5}-81x=0 |:x
x^{4}=81
x=⁴√81
x=3
4x^{5}-x=0 |:x
4x^{4}=1 |:4
x^{4}=
x=₄√
x=
usuwamy niewymierność
x= *
x=
x^{4}-125x=0 | :x
x^{3}=125
x=∛125
x=5
x^{4}-=0 |:x
x^{3}=
x=∛
x=
8x^{5} + x^{2}=0 | :x^{2}
8x^{3} = -1|:8
x^{3} =
x= ∛
x=
x^{4} + 3x^{3}= 3x^{3} + x |:x
x^{3} = 1
x=∛1
x=1
67/27
x^{4} + 3x^{3} + 6x^{2}=0 |:x^{2}
x^{2} + 3x + 6=0
Δ=9-4*1*6=9-24=-15
Brak wartości X ponieważ Δ<0
Liczę na naj;]