Triangle
Hexagon
Octagon
Quadrilateral
Answer:
-2,-1 is the answer to the question
Answer:
(9x - 1)²
Step-by-step explanation:
If you can tell, the square root of 81 is 9. This should be a clue that the polynomial could be one binomial squared. If you tried factoring starting out with 9x in both parenthesis, you could see that you would get (9x - 1)² as your answer.
D, because the Pythagorean theorem can only be used in the case of a right-angled triangle