Предмет: Алгебра, автор: ivanneska03

помогите с алгеброй
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Автор ответа: Universalka
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\displaystyle\bf\\1)\\\\(d+2)(d-4)+(d-4)^{2} =d^{2} -4d+2d-8+d^{2}-8d+16=\\\\=2d^{2} -10d+8\\\\\\2)\\\\4(f+4)^{2} -4f^{2}=4\cdot(f^{2} +8f+16)-4f^{2} =4f^{2} +32f+64-4f^{2} =\\\\=32f+64

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The American film industry was launched in 1890 when Thomas Edison invented an apparatus that could photograph physical action. But it was not until 1903 that the first American feature film "The Great Train Robbery" was produced.
The 1920s were the golden age of the silent cinema. Filmmaking studios - United Artists, Fox, Metro-Goldwyn-Mayer, Paramount, Universal, Columbia -became miniature empires, with separate departments for stories, wardrobes, lighting, sets and publicity. The Los Angeles suburb of Hollywood became movie capital of the United States.
Of all the stars of the silent screen, none is more esteemed than Charlie Chaplin (1889-1977). Chaplin was one of the first artists to use cinema as a personal instrument for expressing his own attitudes and feelings. Chaplin's outstanding films "The Tramp", "The Gold Rush", "City Lights" confirm their power over generations of moviegoers.

The first talking picture "The Jazz Singer" was turned out in 1927 Sound brought with it a reorganization of the studios, more subtle acting technique, new actors and writers, and types of pictures. The 30s offered musicals, cartoons, Westerns, costume dramas, horror films, adaptations of the classics.
The film that became the climax of prewar production was "Gone With the Wind" (1939). After World War II the decline of major Hollywood studios began. The "witch-hunt" conducted by the House of Un-American Activities Committee during the late 40s and all the 50s struck a severe blow to the film industry. Many talented artists had either to leave Hollywood for Europe or abandon the industry altogether.


During the 1950s the film industry faced a growing popularity of TV and European cinema. The decade offered a great number of science fiction films. Another distinctive feature of those years was the popularity of the blockbuster, i.e. the big-budget picture with spectacular lavish sets of extras ("Quo Vadis" "Ben Hur", etc).
In the 60s the film production shifted from the big studios to independent filmmakers. Fewer and fewer films were made on the West Coast. Instead they were shot in New York, Europe, Africa and South America.
The movies of the 60s burst into an inhibited style. The industry produced pictures full of violance and explicit sex scenes. The antihero, who hated the Establishment and broke moral code and criminal law, became prevalent on the screen ("Bonnie and Clyde", "Easy Rider etc.)
The 70s gave rise to a new group of talented directors: Woody Alien, M. Scorsese, S.Spielberg and others. The decade offered pictures of great variety. The movies which smashed box-office records in the 70s were George Lucas's "Star Wars" and Fr. Coppola's "The Godfather" (part I, part II).
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