Question

первое задание алгебра 7 клас

Answer 1

1) 1. (2x-y)(4x^2+2xy+y^2)
2. a(25a^2-b^2)=a(5a-b)(5a+b)
3. -3(x^2+4x+4)= -3(x+2)^2

Answer 2

1)(27x^3-y^3)=(3-y)(9x^2+3xy+y^2)
2)(25a^3-ab^2)=a(25a^2-b^2)=a(5a-b)(5a+b)
3)-3x^2-12x-12=-3(x^2+4x+4)=-3(x+2)^2