A$)$ For what x $-$values does $p(x)=x^4+4x^{}+4x^2+$

B$)$ What is the equation of the tangent line at $x=-1?($write in slope$/$intercept form $y=mx+b)$A$)$ For what x $-$values does $p(x)=x^4+4x^{}+4x^2+$

B$)$ What is the equation of the tangent line at $x=-1?($write in slope$/$intercept form $y=mx+b)$