Question

form a cubic polynomial whose zeros are -3,-1&2 respectively

Answer 1

X3-(-3X2)+(-1x)-2
To you can use the cubic polynomial Formula

Answer 2

Given - zeros of a cubic polynomial
To find - polynomial
Solution - first we will take out sum of zeros , product of zeros , sum of product of zeros
Sum of zeros
-3 + ( -1 ) + 2 = -3 -1 +2 = -2
Product of zeros
(-3)(-1)(2) = 6
Sum of product of zeros
(-3)(-1) + (-1)(2) + (2)(-3) = 3 -2 -6 = -5

So the formula of cubic polynomial is
x^3 - ( sum of zeros )x^2 + ( sum of products if zeros )x - product of zeros

Polynomial is
x^3+2x^2-5x-6


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