Polynomials, Cubic Equations and Partial Fractions - Forming Polynomials from Roots and Factors
Polynomials, Cubic Equations and Partial Fractions - Forming Polynomials from Roots and Factors
IP 3
4 marks
It is given that \(\mathrm{f}(x)\) is a cubic function.
- Express \(\mathrm{f}(x)\) in the factorised form.[3]
- Hence find the value of \(\mathrm{f}(1)\).[1]
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Answer:(a) \(\mathrm f(x)=-4(x+2)^2(x-3)\) (b) \(\mathrm f(1)=72\)
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