Question

Формула:(a-b)²=a²-2ab+b²
Решите:
1)(c-d)²=
2)1-2x+x²=
3)a²-8a+16=
4)(2p-q)²=
5)4a²-4a+1=

Answer 1

1) (c-d)^2=c^2-2cd+d^2 2) 1-2x+x^2=(1-x)^2 3) a^2-8a+16=(a-4)^2 4) (2p-q)^2=4p^2-4pq+q^2 5) 4a^2-4a+1=(2a-1)^2