Simplify the expression: – 9+ – 10h+4h+8

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

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 x-1 and x+3 are the factors of x3+10x2+ax+b find a and b