check whether 1,2, 1/2 are zeroes of the cubic polynomial x³+3x²-x-3
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check whether 1,2, 1/2 are zeroes of the cubic polynomial x³+3x²-x-3
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Answer:
Substitute 1,2,1/2 instead of x to obtain solution.
After Calculation only 1 is a zero of the cubic polynomial
Step-by-step explanation:
For 1,
1³+3(1)²-1-3 = 1+3-1-3=0
Therefore 1 is a zero of the polynomial equation
For 2,
2³+3(2)²-2-3 = 8 +12-2-3=15
Therefore 2 isnt a zero of the polynomial equation
For 1/2,
1/2³+3(1/2)²-1/2-3 = 1/8 + 3/4 -1/2 -3 = -19/8
Therefore 2 isnt a zero of the polynomial equation