1)25с²-а²b²=(5c-ab)(5c+ab)
2)36x²+12x+1=(6x+1)²
3)9-6y+4y²=(3-2y)²
4)x³-64=(x-4)(x²+4x+16)
5)27a³+1=(3a+1)(9a²+3a+1)
6)x⁴-9a²=(x²-3a)(x²+3a)
7)1-4x+4x²=(1-2x)²
8)9a²+6a+1=(3a+1)²
9)a³+1=(a+1)(a²+a+1)
10)1-27a³=(1-3a)(1+3a+9a²)
1)95²-5²÷72,5²-27,5² = (95-5)(95+5) = 90 * 100 = 2
(72.5-27.5)(72.5+27.5) 45 * 100
2)52²-2²÷104²-4² = (52-2)(52+2) = 50 * 54 = 1
(104-4)(104+4) 100 * 108 4