Объяснение:
a)5x-5y+(x-y)²=5(x-y)+(x-y)²=(x-y)(5+x-y)
б)25x²-10xy+y²-9=(5x-y)²-9=(5x-9-3)(5x-9+3)=(5x-12)(5x-6)
в)a²-b²+a-b=a(a-b)+(a-b)=(a-b)(a+1)
г)ay^7+y^7-ay^3-y^3=y^7(a+1)-y³(a+1)=(a+1)(y^7-y³)
Объяснение:
a)5x-5y+(x-y)²=5(x-y)+(x-y)²=(x-y)(5+x-y)
б)25x²-10xy+y²-9=(5x-y)²-9=(5x-9-3)(5x-9+3)=(5x-12)(5x-6)
в)a²-b²+a-b=a(a-b)+(a-b)=(a-b)(a+1)
г)ay^7+y^7-ay^3-y^3=y^7(a+1)-y³(a+1)=(a+1)(y^7-y³)