5 2 x 7 2 x 9 2 July 8, 2019 16 32 64 128 1 2 5 x 1 2 7 x 1 2 9 2 7 x 2 9 2 1 x 5 2 3 x 2 9 2 3 x 5 2 5 x 7 2 7 x 9 1 x 1 2 2 x 5 2 3 x 7 2 4 x 9 2 2 5 x 7 25 + 2 /- 9 5 2 x 40 )+ 7 2 x 20 )+ 17 9 x 10 )= 600 5 2 x 7 3 x 9 2 x 11 13 29 9 * (x + 5) ^ 2 - (x - 7) ^ 2 5 7-x=2 9
