Question

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

Answer 1

Step-by-step explanation:

let, x=1

x(1)=x^3 + 3x^2 -3

=1^3 + 3×1^2 - 3

=1+3-3

=1 answer

let, x=(-1)

x(-1)=x^3 + 3x^2 -3

=(-1)^3 + 3 × (-1)^2 -3

=(-1) + 3 -3

=(-1) answer

let, x=(-3)

x(-3)=x^3 + 3x^2 -3

=(-3)^3 + 3×(-3)^2 -3

=(-27) + 3×9 - 3

=(-27) + 27 -3

=(-3) answer