Question

3) (-b+y)*(-13-y); 4) (x+y)*(x-13) 5) (m+18)*(y+3); 6) (m+12)*(y-3) Заранее спасибо)

Answer 1

Решение смотри в приложении

Answer 2

1. (-b + y) * (-13 - y) can be simplified by applying the distributive property and multiplying each term:

(-b + y) * (-13 - y) = -b * (-13) - b * y + y * (-13) + y * (-y) = 13b + by - 13y - y^2

2. (x + y) * (x - 13) can also be simplified using the distributive property:

(x + y) * (x - 13) = x * (x - 13) + y * (x - 13) = x^2 - 13x + xy - 13y

3. (m + 18) * (y + 3):

(m + 18) * (y + 3) = m * (y + 3) + 18 * (y + 3) = my + 3m + 18y + 54

4. (m + 12) * (y - 3):

(m + 12) * (y - 3) = m * (y - 3) + 12 * (y - 3) = my - 3m + 12y - 36

So, the simplified forms are:

1. 13b + by - 13y - y^2
2. x^2 - 13x + xy - 13y
3. my + 3m + 18y + 54
4. my - 3m + 12y - 36