JAPIELAGOIN JAPIELAGOIN Math Answered 19. Add the following expression 4x2-2x+5 and 5x?- x2+4x+7a. 5x+3x++2x+12 b.5x®-3x2+2x+12 c.5x?-3x-2x+12d. 5x2-3x-2x-12