Question

1.(3x+4y)(2x-y)= 2.(x-2)(3x-6)= 3. -(x+2y)(x+8) 4. (m-n)(m+2n)(m+3n)= 5. (3m+x)(m+2xm-8x)

Answer 1

Ответ:

Пошаговое объяснение:

на фото

Answer 2

Let's expand each of these expressions:

1. (3x + 4y)(2x - y) = 3x * 2x + 3x * (-y) + 4y * 2x - 4y * (-y) = 6x^2 - 3xy + 8xy + 4y^2 = 6x^2 + 5xy + 4y^2

2. (x - 2)(3x - 6) = x * 3x - x * 6 - 2 * 3x + 2 * 6 = 3x^2 - 6x - 6x + 12 = 3x^2 - 12x + 12

3. -(x + 2y)(x + 8) = -x * x - x * 8 - 2y * x - 2y * 8 = -x^2 - 8x - 2xy - 16y

4. (m - n)(m + 2n)(m + 3n) To expand this, we can use the distributive property twice: = (m * m + m * 2n - n * m - n * 2n)(m + 3n) = (m^2 + 2mn - mn - 2n^2)(m + 3n) = (m^2 + mn - 2n^2)(m + 3n)

5. (3m + x)(m + 2xm - 8x) = 3m * m + 3m * 2xm - 3m * 8x + x * m + x * 2xm - x * 8x = 3m^2 + 6mx^2 - 24mx + xm^2 + 2x^2m^2 - 8x^2 = 4x^2m^2 + 9mx^2 - 24mx - 8x^2