find the zero of polynomial 2 x cube + 5 x square + 2 x
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niidhx9477
10.05.2019
Math
Secondary School
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Find all the zeros of the polynomial 2x cube - x square - 5 x minus 2 if two of its zeros are minus 1 and 2
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Answer:
Step-by-step explanation:
Answer:
P(x)= 2x³ - x² - 5x-2
Roots = (x+1 ) and (x-2)
Divide p(X) by (x+1)
x+1 ) 2x³- x² -5x - 2 ( 2x² -3x -1
- 2x³ ± 2x²
-3x² - 5x
3x² + 3x
-2x - 2
2x + 2
0
We will get an equation = 2x²-3x - 2
After solving this we will get its another root = (2x + 1 )
Answer:
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Explanation: