How can you write the expression with rationalized denominator 2+sqrt 5/2-sqrt 5

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

Abus travels 36 miles in 45 minutes. enter the number of miles the bus travels in 60 minutes at this rate.