2*sin(pi/6+ 2*x)+2*sin(2*x-pi/6) = 2*căn bậc hai(2)

The rows and columns of lattice points in a three-by-three square array are evenly spaced one unit apart. how many distinct triangles with at least one side of length 2 units can be drawn using three lattice points for the vertices?

Which of the following is the explicit rule for a geometric sequence defined a recursive formula of a -5a for which the first term is 23?

How do you write something in scientific notation?