T(x) = 2x^2 + 2x - 10, evaluate t(-1).

Zoran Pavlovic asked Sep 23, 2023

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Zoran Pavlovic asked Sep 23, 2023

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24 votes

We have a polynomial function and we have to evaluate it for x=-1.

We can do it by replacing x with -1 and calculate:

$\begin{gathered} t(x)=2x^2+2x-10 \\ t(-1)=2(-1)^2+2(-1)-10 \\ t(-1)=2\cdot1-2-10 \\ t(-1)=2-2-10 \\ t(-1)=-10 \end{gathered}$

Answer: t(-1) = -10

Romain Vincent answered Sep 27, 2023

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