Use a numerical integration routine to evaluate the definite integral below$($to three decimal$$ places$).$

Integral from negative $6$ to $6$ StartFraction $8$ Over $6$ plus $5$ x squared EndFraction dx$6686+5$x$2$dx

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Part $1$

Integral from negative $6$ to $6$ StartFraction $8$ Over $6$ plus $5$ x squared EndFraction dx$6686+5$x$2$dxequals$=1\mathrm{.}8671\mathrm{.}867$

$($Round to three decimal places as$$ needed.$)$