1. (x+√2)(x-√2)-(x+√2)²<0
2. (x-√3)(x-√3)-(x+√3)(x+√3)-√12=0
3. (m+1)²-(2m-2)²+(2m+3)²-(4m-4)²
4. 2(3-x)(1+x)-(1-2x)²+(-2-x)²