40 points
prove the polynomial identity (3x + 1) ^ 2 - 2(3x + 1) = (3x + 1)(3x - 1) drag and drop the expressions to correctly complete the proof of the polynomial identity.

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex

5. which description does not guarantee that a quadrilateral is a squar ajo is a parallelogram with perpendicular diagonals 0% has all sides congruent and all angles congruent o has all right angles and has all sides congruent 10% is both a rectangle and a rhombus 30%

Find cot x if sin x cot x csc x = √2