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dgzis
@dgzis
July 2022
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как решит (3+d)(3+ d)
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233334
Verified answer
(3+d)*(3+d)=(3+d)²=9+6d+d²
(3+d)*(3-d)=9-d²
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dgzis
там минус
dgzis
во 2 скобке
233334
(3+d)*(3-d)?
dgzis
да
233334
Перезагрузите страницу, я добавила
ksyushalyubimo
(3+d)(3+d)=9+3d+3d+d^2
d^2+6d+9=0
d1+d2=-6
d1*d2=9
d1=3
d2=3
0 votes
Thanks 1
dgzis
спасибо но я неправильно написал
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Answers & Comments
Verified answer
(3+d)*(3+d)=(3+d)²=9+6d+d²(3+d)*(3-d)=9-d²
d^2+6d+9=0
d1+d2=-6
d1*d2=9
d1=3
d2=3