1.

(-1)*(-1)...... 2o temas​

Answer»

Step-by-step EXPLANATION:

( - 1) \times ( - 1) \\ we \: know \: that \:  \\  -  \times  -  =  +  \\ 1 \times 1 = 1 \\ then \: ( -1 ) \times ( - 1) = 1



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