(2t - mn) + (8nm - 9k) - (-10k + 15z)

Question

(2t - mn) + (8nm - 9k) - (-10k + 15z)

---

Answer 1

2t-mn+8nm-9k+10k-15z=2t+7mn+k-15z

Answer 2

(2t-mn)+(8nm-9k)-(-10+15z)=2t-mn+8mn-9k+10-15z=2t+7mn-9k-15z+10

Comments

??

---

Зачем?

---

nado

---

Не надо

---

Gagarina?

---

Нет

---

yxxxxx

---

1)(a+z) (n-m)

---

podskazhi

---

An-am+zn-zm