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Разложить на множитель квадратный трехчлен x(2)+2x-15
2) решить уравнение 3x(2)-12=0
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Предмет:
Алгебра -
Автор:
sierradwdq - 5 лет назад
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Ответы 1
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Разложить на множитель квадратный трехчлен x(2)+2x-15 2) решить уравнение 3x(2)-12=0================3x2-12=0x2-4=0(x-2)(x+2)=0x=-2x=2x2+2x-15=0D=4+60=6412=(-2+-8)/2=-5 3x=-5x=3
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Автор:
barkerhiuk - 5 лет назад
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0
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x^2-3x-10=0 -
английские слава русскими буквами One of the most famous monuments in the world is the Statue of Liberty. This amazing in its structure and the architecture of the monument symbolizes the independence and democracy of America. Is this historical monument a few kilometers from the city of new York.
A fascinating journey through the expanse of the Grand canyon, located on the Colorado river, will leave a lot of positive emotions. This unique canyon took the place of one of the greatest wonders of the world.
The beauty of Niagara falls will remain in memory for life. It is located near the border of Canada and America. This unique in its structure falls is divided into three branches, thus forming an indescribable sight.
One of the most beautiful and fascinating in the country is recognized as the highest in the world, waterfall free fall, which reaches a height of about 1 km, which received the name «angel». Here annually is approximately 5 million tourists.
The hottest and driest place on earth, called the Valley of Death, got its name not in vain, in the beginning of the 20th century there has recorded one of the highest temperatures, which amounted to 57 degrees above zero.
Travel to lake Titicaca, which is located in the area of the mountains of the Andes, will be remembered freshness of nature and incredibly clear water. According to some data, it is the largest lake in America and one of the deepest in the world.
Literally blew historical events in different years from the secret town of Machu Picchu, the inhabitants of which was the ancient Incas. If you translate the name, its value is interpreted as the great peak.
A special attraction of America, and indeed the whole continent is mount Aconcagua, which stretches for 7 km up. This mountain has received the status of the highest volcano in the world.
Various historical and architectural features of the cultures of the ancient Maya, Mochica, Cime can be viewed in numerous surviving the pyramids built by these peoples.
We wish you a pleasant and memorable journeys in the United States of America!-
Предмет:
Английский язык -
Автор:
karma61 - 5 лет назад
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Ответов:
1 -
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решите пример 1777-662+12+945=
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Предмет:
Математика -
Автор:
hayden14 - 5 лет назад
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Ответов:
2 -
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рееебяят, прошу,помогите, вообще не соображу как делать..
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1) Na+Cl2 --> NaCl
2)Al + S --> Al2S3
3)Ca + N(2) --> Ca3N2
4) Na + H2 --> NaH
5) Zn + HCl --> ZnCl+H2
6) Na + H2O ---> NaOH + H2
7) Zn + H2O --> ZnO + H2
8) Cu + AgNo3 ---> Cu(NO3)2 + Ag
9) Al + WO3 --> Al 2O3 + W
10) Zn + NaOH --> Na2ZnO2 + h2
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