16 3 8 x 21 1 2 x 3 4 July 8, 2019 16 32 64 128 16 3 8 x 21 1 2 x 3 4 air filter 88.1) 8x = 8 2) 1/4 * x = 16 3) 3 ^ 2 * x = 243 4) 16x = 16 16 3/8 x 21 1/2 5) (8 + x ^ 3)/(16 - x ^ 4) / ((x ^ 2 - 2x + 4)/(x ^ 2 + 4))
