Question

(m - n)(p+q);
(a + 1)(a - 3);
(x + 1)(x - 1).​

Answer 1

Ответ:

(m - n)(p+q)

mp+mq-np-nq

(a + 1)(a - 3)

a*a-3a+a-3

a²-3a+a-3

(x + 1)(x - 1)

x²-1²