X 5 x 2 30 July 8, 2019 16 32 64 128 $5 x 2 5x 30 0 4 x 5 )= 2 x 30 5 x 1 5 x 2 30 300 x 5 x 2 X 5 2 30 6 5x x 2 30 X 2 5x 5 x 2 11x 30 )= 1 X 3 5 x 2 30 X nhân 3 5 x 2 30 .5 x 2.1 x 30 2 X 5 2 30 70 Solve $5 x 2 5x 30 0 X 2 5 5x 30 If f x 5 )= x 2 kx 30 k
