Предмет: Алгебра, автор: egoriha

Решите примеры,по формуле сокращенного умножения.
(у-5в) (у+5в)= ;
(7а+8в) (7а-8в)= ;
(2х+4у)в квадрате= ;
(5к-7)в квадрате=;
49а в квадрате - 64в в квадрате= ;
81m в квадрате - 16= ;
(25z+14y)в квадрате = ;
(-9х+7у)в квадрате= .

Ответы

Автор ответа: elizavetalegostaeva
0
1)у^2-25в^2 как то так
Автор ответа: elizavetalegostaeva
0
(7а-8в)(7а+8в)
Автор ответа: elizavetalegostaeva
0
(9м-4)(9м+4)
Автор ответа: elizavetalegostaeva
0
625z^2+700zy+196y^2
Автор ответа: elizavetalegostaeva
0
81x^2-126xy+49y^2
Автор ответа: elizavetalegostaeva
0
все
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