video1.0<iframe src="https://www.loom.com/embed/a8989a6eb9c448889309107295b53346" frameborder="0" width="1280" height="960" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>9601280Loomhttps://www.loom.com9601280https://cdn.loom.com/sessions/thumbnails/a8989a6eb9c448889309107295b53346-00001.jpg101p: The expression 1/3x^2 - 2 can be rewritten as 1/3(x-k)(x+k), where k is a positive constant. What is the value of k ? a: 2 ; 6 ; sqrt(2) ; sqrt(6) ;