Jake rewrites the expression 81x2 – 1 as a difference of squares so he can factor it. Which answer choice shows how Jake could rewrite the expression?

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

If you answer right ill give brainliest, : )

Read the situations in the table below. then drag a graph and equation to represent each situation. indicate whether each of the relationships is proportional or non-proportional. edit : i got the right answer its attached