

Уравнения и его корни
Presentation
•
Mathematics
•
7th Grade
•
Hard
Юра Круглов
FREE Resource
7 Slides • 0 Questions
1
Квадрат суммы
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2
Цели:
Познакомить обучающихся с новым способом умножения многочлена на многочлен.
Расширить творческий кругозор на тему "многочлен".
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3
Организационный момент.
Повторение пройденного материала.
Закрепления нового материала.
Ход урока
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4
Организационный момент
Путешествие по спортивным станциям:
Биатлон
Хоккей
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1 станция(биатлон)устный счёт
Выбрать правильный ответ:
a ( b+ c ) =
b ( a - c ) =( a + b )( a+b) =
Ответы:1). a2 + 2 ab + b2
2).ab – c3).ab – bc
4).ab + ac
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6
2 станция(хоккей) Квадрат суммы двух чисел
Итак, мы выяснили, что(a + b)(a + b)=a2 +ab +ab+ b2 = a2 +2ab+ b2или ( a + b)2= a2 +2ab+ b2 т.е.« Квадрат суммы двух чисел равен квадрату первого числа плюс удвоенное произведение первого числа на второе плюс квадрат второго числа.»
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7
Спасибо за внимание!
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Квадрат суммы
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