Factor completely: x^40–x^20 y^24+y^8 a^20–a^10+a^5 b^60+b^40–b^20 (^=to the power of)

Can someone check my answer? you

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin