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4Venify that 1,-1 and -3 are the zeroes of the cubic polynomiacheck the relationship between zeroes and the coefficients. |
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Answer» put in the values in the equation1^3+3{1)^2-1-3=1+3-1-3=0hence 1 is a root(-1)^3+(-1)^2-(1)-3=-3+1-1+3=0hence -1 is a root(-3)^3+3(-3)^2-(-3)-3-27+27+3-3=0hence -3 is also a root |
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