[tex]x_{1} = \sqrt{2} \\x_{2} =- \sqrt{2} \\x_{3} = -1[/tex]Odpowiedź:
a)
[tex]4x^3-x^2=3x^2-1+x\\4x^3-x^2-3x^2-x+1=0\\4x^3-4x^2-x+1=0\\4x^2(x-1)-(x-1)=0\\(4x^2-1)(x-1)=0\\[/tex]
4x^2 -1 = 0 lub x-1 =0
4x^2 = 1 lub x = 1
ODP.
[tex]x_{1} = \frac{1}{2} \\x_{2} =- \frac{1}{2} \\x_{3} = 1[/tex]
b)
[tex]x^{3} +x^{2} -2x -2 =0\\x^{2} (x+1) -2(x+1)=0\\(x^{2} -2) (x+1)=0[/tex]
x^2 -2 =0 lub x+1 =0
x^2 = 2 lub x = -1
[tex]x_{1} = \sqrt{2} \\x_{2} =- \sqrt{2} \\x_{3} = =-1[/tex]
c)
[tex]3x^{2} =x\\3x^{2} -x=0\\x(3x-1)=0[/tex]
x = 0 lub 3x-1 =0
3x = 1
[tex]x =\frac{1}{3}[/tex]
Szczegółowe wyjaśnienie:
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[tex]x_{1} = \sqrt{2} \\x_{2} =- \sqrt{2} \\x_{3} = -1[/tex]Odpowiedź:
a)
[tex]4x^3-x^2=3x^2-1+x\\4x^3-x^2-3x^2-x+1=0\\4x^3-4x^2-x+1=0\\4x^2(x-1)-(x-1)=0\\(4x^2-1)(x-1)=0\\[/tex]
4x^2 -1 = 0 lub x-1 =0
4x^2 = 1 lub x = 1
ODP.
[tex]x_{1} = \frac{1}{2} \\x_{2} =- \frac{1}{2} \\x_{3} = 1[/tex]
b)
[tex]x^{3} +x^{2} -2x -2 =0\\x^{2} (x+1) -2(x+1)=0\\(x^{2} -2) (x+1)=0[/tex]
x^2 -2 =0 lub x+1 =0
x^2 = 2 lub x = -1
ODP.
[tex]x_{1} = \sqrt{2} \\x_{2} =- \sqrt{2} \\x_{3} = =-1[/tex]
c)
[tex]3x^{2} =x\\3x^{2} -x=0\\x(3x-1)=0[/tex]
x = 0 lub 3x-1 =0
3x = 1
[tex]x =\frac{1}{3}[/tex]
Szczegółowe wyjaśnienie: