(5+a)²=25+10a+a²
(3a+7)²=9a²+42a+49
(6x+2)²=36x²+24x+4
(7a³-4b²)(7a³+4b²)=49a^6-16b⁴
(2a-x)(2a+x)=4a²-x²
формулы
(а+в)²=а²+2ав+в²
(а-в)(а+в)=а²-в²
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Answers & Comments
(5+a)²=25+10a+a²
(3a+7)²=9a²+42a+49
(6x+2)²=36x²+24x+4
(7a³-4b²)(7a³+4b²)=49a^6-16b⁴
(2a-x)(2a+x)=4a²-x²
формулы
(а+в)²=а²+2ав+в²
(а-в)(а+в)=а²-в²