1.

Simplify: \(\frac{{69{\rm{\;}} \times {\rm{\;}}69{\rm{\;}} \times {\rm{\;}}69{\rm{\;}} - {\rm{\;}}65{\rm{\;}} \times {\rm{\;}}65{\rm{\;}} \times {\rm{\;}}65}}{{69\; \times \;69\; + \;69\; \times \;65\; + \;65\; \times \;65}}\)

A. 1
B. 4
C. 0.216
D. 0.164
Answer» C. 0.216


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