If you survey only females.
would the poll have used stratification, so the results would tell us little about the population of adults or would undercoverage bias have occurred, so the results would tell us little about the population of adults?

Pls . yeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeet

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

We just started the introduction into circles and i have no idea how to do this.