What is 2 over x ²- 4x + 4 over x - 4

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

How do you use the elimination method for this question? explain, because i really want to understand!

Two students were asked if they liked to read. is this a good example of a statistical question? why or why not? a yes, this is a good statistical question because a variety of answers are given. b yes, this is a good statistical question because there are not a variety of answers that could be given. c no, this is not a good statistical question because there are not a variety of answers that could be given. no, this is not a good statistical question because there are a variety of answers that could be given