Which is the beat definition of an exterior angle of a triangle

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .

First subtract 10 from both side
y^2+6y-16=0
(y+8)(y-2)=0
-8 and 2