7x 4 6x 5 11x )-( 12x 4x 4 2x 5 July 8, 2019 16 32 64 128 6(5x−12)+4(11−6x) при x = 7x=7 6(7x+12) - 12(5x - 9) 6(7x+12)−12(5x−9) при x = 6x=6
