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Nedostupnaya
@Nedostupnaya
August 2022
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Помогите с одним примером. Голова уже не варит.
Упростить:
(a-2)(a+2)-(a-4)^2=
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ТипичныйВадик
А^2-4+а^2+8а-16=2а^2+8а-20
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marinasherstob
(а-2)(а+2)-(а-4):2=а*а-а*2+2*а+2*2-а+4:2=а2-2а+2а+4-а+2=
а2-(2а+2а-а)+4+2=а2-а(2+2-1)+4+2=а2-3а+4+2=а2-3а+6.как то так.
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Answers & Comments
а2-(2а+2а-а)+4+2=а2-а(2+2-1)+4+2=а2-3а+4+2=а2-3а+6.как то так.