помогите !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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Ответил litanalove
0
(x-y)(x+y)=х²-y²
(2a+b)(a+2b)=2a²+4ab+ab+2b²=2a²+5ab+2b²
(2a+b)(a+2b)=2a²+4ab+ab+2b²=2a²+5ab+2b²
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