x-1=3, x=4
2)
2x<-1 x<-1/2<br>
3)
1; 0.5^{x- x^{2} } > 0.5^{0} " alt=" 0.5^{x- x^{2} } >1; 0.5^{x- x^{2} } > 0.5^{0} " align="absmiddle" class="latex-formula">
0" alt="x- x^{2} >0" align="absmiddle" class="latex-formula">
x>1
4)
х-1=1 или х+1=3 сл-но х=2