Odpowiedź:
W(x ) = [tex]x^3 - 4 x^2 + x + 6[/tex]
x = - 1 bo W( - 1) = - 1 - 4 - 1 + 6 = 0
( x³ - 4 x² + x + 6 ) : ( x + 1) = x² - 5 x + 6
- x³ - x²
----------------------
- 5 x² + x
5 x² + 5 x
--------------------
6 x + 6
- 6 x - 6
----------------
0
oraz
x² - 5 x + 6 = 0
( x - 2)*( x - 3) = 0
x - 2 = 0 lub x - 3 = 0
x = 2 lub x = 3
Odp. x = - 1 lub x = 2 lub x = 3
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Odpowiedź:
W(x ) = [tex]x^3 - 4 x^2 + x + 6[/tex]
x = - 1 bo W( - 1) = - 1 - 4 - 1 + 6 = 0
( x³ - 4 x² + x + 6 ) : ( x + 1) = x² - 5 x + 6
- x³ - x²
----------------------
- 5 x² + x
5 x² + 5 x
--------------------
6 x + 6
- 6 x - 6
----------------
0
oraz
x² - 5 x + 6 = 0
( x - 2)*( x - 3) = 0
x - 2 = 0 lub x - 3 = 0
x = 2 lub x = 3
Odp. x = - 1 lub x = 2 lub x = 3
=================================
Szczegółowe wyjaśnienie: