Find (x³+x²-20x+24) divided by (x-3)
1 answer:
Answer:
![\frac{x^3 + x^2 -20x + 24}{x-3} = x^2 +4x-8](https://tex.z-dn.net/?f=%5Cfrac%7Bx%5E3%20%2B%20x%5E2%20-20x%20%2B%2024%7D%7Bx-3%7D%20%3D%20x%5E2%20%2B4x-8)
Step-by-step explanation:
Given;
p(x) = x³ + x²- 20x + 24
factor of p(x) = x-3
Apply long division method;
x² + 4x - 8
------------------------------
x - 3 √ x³ + x²- 20x + 24
-( x³ - 3x²)
-------------------------------
4x² - 20x + 24
-(4x² -12x )
-------------------------------
-8x + 24
- (-8x + 24)
-----------------------------------------
0
![thus, \ \frac{x^3 + x^2 -20x + 24}{x-3} = x^2 +4x-8](https://tex.z-dn.net/?f=thus%2C%20%5C%20%5Cfrac%7Bx%5E3%20%2B%20x%5E2%20-20x%20%2B%2024%7D%7Bx-3%7D%20%3D%20x%5E2%20%2B4x-8)
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