Question

(x+a)(y-a) (a+x)(a-y) (-m-n)(m-n) (a-b)(-a-b)

Answer 1

Ответ:

смотри фото ниже.

Объяснение:

Answer 2

Let's simplify the given expressions:

1. (x + a)(y - a) Expanding this expression using the distributive property, we get: xy - xa + ay - a^2

2. (a + x)(a - y) Expanding this expression using the distributive property, we get: a^2 - ay + ax - xy

3. (-m - n)(m - n) Expanding this expression using the distributive property, we get: (-m)(m) - (-m)(n) - n(m) - n(-n) = -m^2 + mn - nm + n^2 = -m^2 + 2mn + n^2

4. (a - b)(-a - b) Expanding this expression using the distributive property, we get: (-a)(-a) + (-a)(-b) + (b)(-a) + (b)(-b) = a^2 + ab - ab - b^2 = a^2 - b^2

Therefore, the simplified expressions are:

1. xy - xa + ay - a^2
2. a^2 - ay + ax - xy
3. -m^2 + 2mn + n^2
4. a^2 - b^2