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1. |
If $$ {(2x-5y)^{3}-(2x+5y)^{3}=y{[A{x}^{2}+B{y}^{2}]}}$$, then what is the value of $$ {(2A-B)}$$? |
A. | 25 |
B. | 10 |
C. | 15 |
D. | 40 |
Answer» C. 15 | |