A) xу + 3y + x = 3 = b) 25-c^2= c) ab^2-2abc+ac^2 d) 3a^3-12a^2b+6ab g) x(x-1)+2(x-1)

Question

A) xу + 3y + x = 3 =
b) 25-c^2=
c) ab^2-2abc+ac^2
d) 3a^3-12a^2b+6ab
g) x(x-1)+2(x-1)

Answer 1

А) xy +3y+x+3= y(x+3)+(x+3)= (x+3)(y+1)
b) = (5+c)(5-c)
c) a( b^2-2bc+c^2)= a(b-c)^2
d) 3a( a^2- 4ab + 2b) 
g) = (x-1)(x+2)

Answer 2

A) xy+3y+x+3=y(x+3)+(x+3)=(y+1)(x+3)
b) 25-c^2=(5-c)(5+c)
c) ab^2-2abc+ac^2=a(b^2-2bc+c^2)=a(b-c)^2
d) 3a^3-12a^2b+6ab=3a(a^2-4ab+2b) - здесь, вероятно, в условии ошибка
e) x(x-1)+2(x-1)=(x+2)(x-1)