5x 2 3x 8 4x 7 2x 2 6 5x 4x 2 July 8, 2019 16 32 64 128 5 x 7 = 35 (5x + 2)(5x + 2) + (8x + 3)(7 – 2х) - (x + 4)(9x - 1) + 6 = 0