curve and the $m..$

$5-8$ Find $an$ equation $of$ the tangent line $to$ the curve $at$ the

$en$ point.

$y=\frac{2x+1}{x+2},(1,1)$

$(a)$ Find the slope $of$ the tangent $to$ the curve

$y=3+4x^2-2x^{3}at$ the point where $x=a.$