What is the lcm of a) 3,12,16 b)6,9,15 c) 14,18,21

Which value is not a solution of 8x^3 – 1 = 0

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.

Which letters from the table represent like terms? a and b b and c a and d b and d