Question

verify that 1,-1and-3 are the zeroes of the cubic polynomial x³+3x²-x-3 and check the relationship between zeroes and coefficients
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Answer 1

Answer:

1

x^3 + 3x^2 - x - 3

1 + 3* 1 - 1 - 3

1+3-1-3 = 0

yes 1. is a factor

-1

-1 + 3 * 1 - (-1) - 3

-1 + 3 + 1 - 3 = 0

yes -1 is a factor .

-3

-3 + 3 * 3 - (-3) - 3

-3 + 9 + 3 - 3 = 3

-3 is not a factor