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The required polynomial is [tex]x^{3}-7x^{2} -20x+96[/tex]
Polynomial : If in an expression all of variables, constants and exponents are present with mathematical operations like addition, multiplication, subtraction & division, then it is called polynomial.
If a polynomial has degree 3 as a highest degree, then the polynomial is called degree 3 polynomial or cubic polynomial.
A degree 3 polynomial having zeros α, β, γ and the coefficient of x³ equal a is, a(x- α)(x- β)(x- γ)
Given, Zeros of the polynomial are -4, 3, 8 & coefficient of x³ equal 1.
Hence, the required polynomial is,
[tex]1(x-(-4))(x-3)(x-8)[/tex]
[tex](x+4)(x-3)(x-8)[/tex]
[tex]=(x+4)(x^{2} -11x+24)[/tex]
[tex]=x^{3}-11x^{2} +24x+4x^{2} -44x+96[/tex]
[tex]=x^{3}-7x^{2} -20x+96[/tex]
This is a degree 3 polynomial.
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