№1:
А) (х+4) 2=Х 2+8Х+16
Б) (У-5Х) 2=У 2-10ХУ+25Х 2
В) (3а-2)(3а+2)=9а2-4
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№1:
А) (х+4) 2=Х 2+8Х+16
Б) (У-5Х) 2=У 2-10ХУ+25Х 2
В) (3а-2)(3а+2)=9а2-4