Find the Length of side x in simplest radical from with a rational denominator

What causes the cyclical changes in the appearance of the moon?

Asap! ! ! ! true or false the gobi desert, the largest desert in asia. covers parts of northern china and southern russia

Good scientists always report their observations and results truthfully. this is especially important when a scientist's results go against previous ideas or predictions. coming up with inventive ways to solve problems or produce new things