There can be more than one answerwhich expressions are polynomials? select each correct answer.−x^2+5x x^2+5x1/5 −7x^2+5/3x 6x² + 5xwhich expressions are polynomials? select  each  correct answer.4x³ +  yy2 +  sx^2−x√+2

1. are the triangles similar and if so why? what is the value of x? show your work.

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.

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2