Simplify each radical

Farnesene is a sesquiterpene. how many different isomers arising from double-bond isomerizations are possible? g

How to solve a simultaneous equation involved with fractions?

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil