ShreenikaH605854 ShreenikaH605854

30-10-2022
Mathematics

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Evaluate the polynomial X^4 + 4x^3 – 2x² +9 when x=-1.

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ArrayahZ397256 ArrayahZ397256

30-10-2022

For x = -1, we have:

[tex]\begin{gathered} x^4+4x^3-2x^2+9 \\ \Rightarrow(-1)^4+4(-1)^3-2(-1)^2+9=1+4(-1)-2(1)+9 \\ =1-4-2+9=-3+7=4 \end{gathered}[/tex]

Therefore, the polynomial evaluated in x=-1 results in 4

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