Evaluate - b - b2 - 4ac when a = 1, b= -10, c = 9

Syone asked Dec 16, 2023

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Syone asked Dec 16, 2023

by Syone

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20 votes

Evaluate:

$-b-\sqrt[]{b^2-4ac}$

For a = 1, b = -10, and c = 9

Substituting:

$-(-10)-\sqrt[]{(-10)^2-4(1)(9)}$

Operating:

$\begin{gathered} 10-\sqrt[]{100-36} \\ 10-\sqrt[]{64} \\ 10-8 \\ 2 \end{gathered}$

Result: 2

Eric Skiff answered Dec 20, 2023

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