Discover Questions

Xy squared + 2x = 4 how to solve and no if its symmetry or no? Thank you!? Given a 12-question true-false quiz, what is the probability of answering exactly 5 of the questions correctly by guessing? Give an example of a function from N to N that is one to one but not onto? Were the special relativity postulates incomplete since the changes and causes of motion were not exactly defined? What kind of plants are healthy foods made of?