Мне скоро в школу,а я не понял помогите пожалуйста 635 - №17004440

Мне скоро в школу,а я не понял помогите пожалуйста 635
- Предмет:
  Алгебра
- Автор:
  apollohall
- 6 лет назад

Ответы 1

(3m-2n)²+5m(4n-m)=9m²-12mn+4n²+20mn-5m²=4m²+8mn+4n²==4(m²+2mn+n²)=4(m+n)².(9x+2y)²-(8x+3y)(4x-4y)=81x²+36xy+4y²-32x²+20xy+12y²==49x²+56xy+16y²=(7x+4y)².
- Автор:
  einsteinxkij
- 6 лет назад
- 0
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