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x + 3
_________
x+2 / x² + 5x + 6
x² + 2x
__________ _
3x + 6
3x + 6
__________ _
0
Jadi, x² + 5x + 6 : (x+2) = x + 3
b.
2x - 5
___________
x+2 / 2x² - x - 10
2x²+4x
__________ _
- 5x - 10
- 3x - 10
__________ _
0
Jadi, 2x²-x-10 : (x+2) = 2x - 5
c.
x² + 6x + 8
______________
2x-5 / 2x³+ 7x² -14x-40
2x³ - 5x²
______________ _
12x²-14x-40
12x²-30x
______________ _
16x-40
16x-40
_________ _
0
2x³+ 7x² -14x-40 : (2x-5) = x² + 6x + 8
Maaf, kalau salah.. :) !!