The sum of 4 and x
4 + x
4 - x
4x

Write the expression in simplified radical form. show all steps and work including any foil method work. (hint: use the conjugate. no decimal answers.) (9-2√3)/(12+√3)

Suppose a pendulum is l meters long. the time,t,in seconds that it tales to swing back and forth once is given by t=2.01

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits