Cos^2 2x−cos^2 6x=sin4x sin8x
me prove it

The graph below shows the price of different numbers of mats at a store: a graph is shown. the values on the x axis are 0, 2, 4, 6, 8, 10. the values on the y axis are 0, 21, 42, 63, 84, and 105. points are shown on ordered pairs 0, 0 and 2, 21 and 4, 42 and 6, 63 and 8, 84. these points are connected by a line. the label on the x axis is number of mats. the title on the y axis is price in dollars. which equation can be used to determine p, the cost of b mats?

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

1. what is the measure of ∠abc? what is the measure of ∠abd?