1)a-b>=4a+5b
a-4a<=b+5b
-3a<=6b
-a<=2b
a<=-2b
2)a-2b<=5a+4b
a-5a=>2b+4b
-4a=>6b
-2a=>3b
3)(x+2)(x-3)<=(x+3)(x-2)
x^2-3x+2x-6<=x^2-2x+3x-6
x-6<=x-6
2x>=0
X>=0
4)(x-5)(x+1)>=(x+5)(x-1)
x^2+x-5x-5>=x^2-x+5x-5
x<=0
1)a-b>=4a+5b
a-4a<=b+5b
-3a<=6b
-a<=2b
a<=-2b
2)a-2b<=5a+4b
a-5a=>2b+4b
-4a=>6b
-2a=>3b
3)(x+2)(x-3)<=(x+3)(x-2)
x^2-3x+2x-6<=x^2-2x+3x-6
x-6<=x-6
2x>=0
X>=0
4)(x-5)(x+1)>=(x+5)(x-1)
x^2+x-5x-5>=x^2-x+5x-5
x<=0