Are there more points on a line or a half plane or a plane

What is the missing constant term in the perfect square that starts with x^2 -20x

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height