Factor the expression x^4 -1 using the polynomial identify x^2-y^2)=(x-y)(x+y)

Its worth 10000000 points need asap if you answer correctly ill mark brainliest

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

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