Ответ:
1) (35-25)(35+25)=10×60=600
2)=(39,5-3,5)(39,5+3,5)=36×43=1548
(57,5-14,5)(57,5+14,5)=43×72=3096
=1548/3096=0,5
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Ответ:
1) (35-25)(35+25)=10×60=600
2)=(39,5-3,5)(39,5+3,5)=36×43=1548
(57,5-14,5)(57,5+14,5)=43×72=3096
=1548/3096=0,5