How do you solve for x when it's cubed?

Adam plans to choose a video game from the section of the store where everything is 75% off. he writes the expression d-0.75d to find the sale price of the game if the original price is d dollars. gena correctly writes another expression, 0.25d, that will also find the sale price of the game if the original price is d dollars. use the drop down menus to explain each part of adams and rena's expression

Need on this geometry question. explain how you did it.

What is the solution set of the quadratic inequality x^2-5< or equal to 0