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kirdasan1
@kirdasan1
July 2022
2
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найдите значение выражения (2+3a)(5-a)-(2-3a)(5+a) при a= 1,5
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Мопсик21
2+3=5
5-5=0
2-3=1
1+5=6
1 votes
Thanks 1
danyavdele
10-2a+15a-3a2- (10+2a-15a-3a2)=
=10-10-2a-2a+15a+15a+3a2+3a2=-4a+30a+6a2=6a2+26a=6*1.5.1.5+26*1.5=39,65
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Answers & Comments
5-5=0
2-3=1
1+5=6
=10-10-2a-2a+15a+15a+3a2+3a2=-4a+30a+6a2=6a2+26a=6*1.5.1.5+26*1.5=39,65