-14а^5 x^6
25a^6 b^2
4x^2- 4x-1+4x^2-1= 8x^2-4x=4x(2x-1)
c(b^2-9)= c(b-3)(b+3)
2(a^2+6a+9)=2(a+3)^2
(x-y)-2(x^2-y^2)=(x-y)-2(x-y)(x+y)=(x-y)(1-2x-2y)
3-4+24x=6x+8
24x-6x=8-3+4
18x=9
x=2
x+2-12x=24
-11x=24-2
-11x=22
x=-2
x(3x+4)=0
x=0 3x+4=0
3x=-4
x=-4/3= -1 1/3
y=3x+5
2(3x+5)+5x=23 y=3*13/11+5
6x+10+5x=23 y=39/11+5
11x=23-10 y=8 6/11
11x=13
x=13/11