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nikola1401
@nikola1401
July 2022
1
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Раскройте скобки:
1)(6р-n-4m)*(-1,6)
2)(-2,6а-b+1,4с)*(-m)
3)-0,7n(7а-2,1+5r)
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Arkadiя
1) (6p-n-4m)*(-1,6)=6p*(-1,6)-n*(-1,6)-4m*(-1,6)= -9,6p+1,6n+6,4m
2) (-2,6a-b+1,4c)*(-m)= -2,6a*(-m)-b*(-m)+1,4c*(-m)=2,6am+bm-1,4mc
3) -0,7n(7a-2,1+5r)=-0,7n*7a-0,7n*(-2,1)-0,7n*5r= -4,9an+1,47n-3,5nr
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Answers & Comments
2) (-2,6a-b+1,4c)*(-m)= -2,6a*(-m)-b*(-m)+1,4c*(-m)=2,6am+bm-1,4mc
3) -0,7n(7a-2,1+5r)=-0,7n*7a-0,7n*(-2,1)-0,7n*5r= -4,9an+1,47n-3,5nr