B) 4 ^ 3 7 ^ 2 July 8, 2019 16 32 64 128 4 7 3 2 )+ b 2a b - 5 3 4 7 5 b 3 )= 4 b 7 )+ 2b − 7 4 b+ 4 3 2 1 If a 3 4 b (- 7 2 If a 3 4 b (- 7 2 c xy are collinear then 2b 7 3b 4 b 3 A 3 b 4 c 7 a 2b 3c Cho a 2 1 b 3 4 c 7 2 A 3 b 4 c 7 a 2b 3c 6 8 14 If a b 3 4 and b c 7 2 find a c B 7 2b 3 4b 1 )- 4 A b = 3 4 และ b c = 2 7
