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FunGmamer
@FunGmamer
July 2022
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Вычислите наиболее удобным способом значение выражения при m=1 _ 1/2; 2/3
12m³n-27mn³
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Answers & Comments
volk077
12m^3n-27mn^3=3mn(4m^2-9n^2)=3mn(2m-3n)(2m+3n)
При m=1 1/2 n=2/3
3mn(2m-3n)(2m+3n)=3*3/2*2/3(2*3/2-3*2/3)(2*3/2+3*2/3)=3*1*5=15
1 votes
Thanks 1
FunGmamer
Спасибо большое! :)
volk077
Не за что
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Answers & Comments
При m=1 1/2 n=2/3
3mn(2m-3n)(2m+3n)=3*3/2*2/3(2*3/2-3*2/3)(2*3/2+3*2/3)=3*1*5=15