Concepts and Skills Which ratio is equivalent to the scale 3 in.:1 ft?

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

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

What numbers are included in the set of integers? what numbers are not included?