A^2b^2(a^2+3ab-b^)=a^4b^2+3a^3b^3-a^2b^4
(t-3)(t+5)=t^2+2t-15
(4x-7)(3x-8)=12x^2-53t+56
t^2+tx+11t+11x=t(t+x)+11(t+x)=(t+11)(t+x)
(4x-9)-(2х-3)-х^2=5-(x+x^2)
4x-9-2x+3-x^2=5-x-x^2
2x-x^2+x^2+x=5+6
3x=11x=11\3=3 2\3
6(5x-4)-3(3x-2)=5
30x-24-9x+6=5
21x=5-18
21x=-13
x=-13\21
5t^2-t=0
t(5t-1)=0
t=0 5t-1=0
t=1\5
3x^3-27x=0
3x(x-3)(x+3)=0
3x=0 x-3=0 x+3=0
x=0 x=3 x=-3
(7x+5)\5-(3x+1)\2=1
2(7x+5)-5(3x+1)=10
14x+10-15x-5=10
-x=10-5
х=-5