Show that the difference between any two consecutive square number in an odd number

Answer for 10 points show work you guys in advanced < 3

Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.

Which of the following circles have their centers in the third quadrant?