Question

Спростіть вираз. ТЕРМІНОВО.!! ТРЕБА РОЗПИСАТЬ ПОВНІСТЮ РОЗВ'ЯЗОК 1) (x+y)(x-y)+(x-y)(x-y)= 2) (x+y)(2x-y)+(x-y)(x-2y)= 3) (x+y)(2x-y)-(x-y)(x-2y)= 4) -(x+y)(2x-y)+(x-y)(x-2y)= 5) -(x+y)(2x-y)-(x-y)(x-2y)= 6) (2x-3) (3x+2)-(2x-5)(x+1)=

Answer 1

Объяснение:

Если 3б-4а>2б-3а, напишите неравенства, полученные в результате вычитания b из части неравенства

ДАМ 70 БАЛЛОВ БЕЗ ОБЪЯСНЕНИЙ ТОЛЬКО РЕШЕНИЕ И ОТВЕТ, БЕЗ РЕШЕНИИ НЕЛЬЗЯ, С РЕШЕНИЕМ И ОТВЕТОМ

Answer 2

1) (x+y)(x-y) + (x-y)(x-y) = First, we expand each term: (x^2 - y^2) + (x^2 - 2xy + y^2) = Combine like terms: 2x^2 - 2xy =

2) (x+y)(2x-y) + (x-y)(x-2y) = First, we expand each term: 2x^2 - xy + 2xy - y^2 + x^2 - 2xy + xy - 2y^2 = Combine like terms: 3x^2 - 3y^2 =

3) (x+y)(2x-y) - (x-y)(x-2y) = First, we expand each term: 2x^2 - xy + 2xy - y^2 - (x^2 - 2xy - xy + 2y^2) = Combine like terms: 2x^2 - xy + 2xy - y^2 - x^2 + 2xy + xy - 2y^2 = Combine like terms: x^2 + 2xy - y^2 =

4) -(x+y)(2x-y) + (x-y)(x-2y) = First, we expand each term: -(2x^2 - xy + 2xy - y^2) + (x^2 - 2xy - xy + 2y^2) = Combine like terms: -2x^2 + xy - 2xy + y^2 + x^2 - 2xy - xy + 2y^2 = Combine like terms: -x^2 - 4xy + 3y^2 =

5) -(x+y)(2x-y) - (x-y)(x-2y) = First, we expand each term: -(2x^2 - xy + 2xy - y^2) - (x^2 - 2xy - xy + 2y^2) = Combine like terms: -2x^2 + xy - 2xy + y^2 - x^2 + 2xy + xy - 2y^2 = Combine like terms: -3x^2 + 2y^2 =

6) (2x-3) + (3x+2) - (2x-5)(x+1) = First, we expand the last term: 2x - 3 + 3x + 2 - (2x^2 + 2x - 5x - 5) = Combine like terms: 5x - 1 - 2x^2 - 3x + 5 = Rearrange the terms: -2x^2 + 2x + 5x - 3x - 1 + 5 = Combine like terms: -2x^2 + 4x + 4 =