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a fost răspuns

Calculeaza dupa mode:1004×1003+2×1004-1005×2=1004×(1003+2)-1005×1002=1004×1005-1005×1002=1005×(1004-1002=1005×2=2010 primul exercitiu 7×8+2×7+9×10

Răspuns :

7x8+2x7+9x10=7x(2+8)+9x10=7x10+9x10=10x(7+9)=10x16=160


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