Factor and find all the roots of x^4 +x=0

Name the most appropriate metric unit for each measurement like the mass of cow

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36