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Calculati folosind factorul comun:
b) 99×101×75+25×9999-999900+1997
repede ajutatima plz


Răspuns :

99x101x75+25x9999-999900+1997=
99(101x75+25x101-10100)+1997=
99(7575+2525-10100)+1997
99(10100-10100)+1997=
99x0+1997=1997