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welcome124
@welcome124
July 2022
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1. Упростите выражение [tex] \sqrt{ \frac{25 a^{6} }{49 b^{2} } } , a>0, b>0[/tex]
2. Сумма корней уравнения 7x² + 21x = 0 равна?
3. Вычислите: [tex](3 \sqrt{11})^2- \sqrt{6400}. [/tex]
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Answers & Comments
Dashkoo45662
1. 5а^3/7b
2. 7
x² + 21x = 0
7х(х+3)=0
7х=0
х(1)=0
х+3=0
х(2)=-3
х(1)+х(2)=0+(-3)=-3
3.(списать пример)=
9*11-80=19
4 votes
Thanks 6
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Answers & Comments
2. 7x² + 21x = 0
7х(х+3)=0
7х=0
х(1)=0
х+3=0
х(2)=-3
х(1)+х(2)=0+(-3)=-3
3.(списать пример)=9*11-80=19