Use the squared identities to simplify 2sin^2 x cos^2 x a. (1+4cos(2x)-cos(4x))/4 b. (1+4cos(2x)+cos(4x))/4 c. (1+cos(4x))/4 d. (1-cos(4x))/4

Taking algebra two apex courses and need with these questions

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.