Partially factored form: f(x) = (x − 3)(x + 3)(x2− 4x + 5)

Use the quadratic formula to identify the zeroes of x2 − 4x + 5.

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

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.

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.