How did Dante commit an error while expanding the binomial (x-2y)^5

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

Solve the equation w^3 = 1,000 i honestly dont know how to punch this into a calculator pls

10 ! in a race, nick is 50 feet in front of jay after ten seconds. how fast can nick run, if jay can run 20 feet per second?