Round 209 to the nearest 10

Someone which statements are true? check all that apply.

Its due 1. what is the product of 1/2-1/4? write your answer in standard form.a) show your work.b) is the product of 1/2x-1/4 and 5x^2-2x+6 equal to product of 1/4x-1/2 and 5x^2-2x+6? explain your answer.

Find the exact value of cos(arcsin( one fourth for full credit, explain your reasoning. (2 points)