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Choose all the right statements. If you choose more than one for your answer, please separate them by comma and arrange them in alphabetical order. Use CAPITAL letters only, please.
A. ⁴-co⁴/²co²=c²-cc²
B. ²x=2x
C. co/1+=1-//co
D. 1-³/1-=c²+
E. -1=-1/co-1
O ,,
O ,
O A, C, D
O ,



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