(0.82)(power 3) - (0.1)(power 3)/ (0.82)(power 2) + 0.082 + (0.1)(power 2) is:  Choose the correct answer.
A) 0.86
B) 0.68
C) 0.96
D) 0.69
E) 0.72

Rationale: "given expression = ( 0.82 ) ( power 3 ) - ( 0.1 ) ( power 3 ) / ( 0.82 ) ( power 2 ) + ( 0.82 x 0.1 ) + ( 0.1 ) ( power 2 ) = a ( power 3 ) - b ( power 3 ) / a ( power 2 ) + ab + b ( power 2 ) = ( a - b ) = ( 0.82 - 0.1 ) = 0.72 answer is e"
Answer: E