1a)
-24\\x>-12" alt="2x>-24\\x>-12" align="absmiddle" class="latex-formula">
1б)
1в)
0.6+2x\\1.2x+3.6+1.8x-2x>0.6\\3x-2x>0.6-3.6\\x>-3" alt="1.2(x+3)+1.8x>0.6+2x\\1.2x+3.6+1.8x-2x>0.6\\3x-2x>0.6-3.6\\x>-3" align="absmiddle" class="latex-formula">
2a)
4x-1} \atop {7-2x\leq10-3x}} \right. =>\left \{ {{x<13} \atop {x\leq3}} \right. =>x\leq 3" alt="\left \{ {{3x+12>4x-1} \atop {7-2x\leq10-3x}} \right. =>\left \{ {{x<13} \atop {x\leq3}} \right. =>x\leq 3" align="absmiddle" class="latex-formula">
2б)
6x+1} \atop {-\frac{x}{2}<2 }} \right. =>\left \{ {{x<-\frac{5}{2} } \atop {x>-4}} \right." alt="\left \{ {{2x-9>6x+1} \atop {-\frac{x}{2}<2 }} \right. =>\left \{ {{x<-\frac{5}{2} } \atop {x>-4}} \right." align="absmiddle" class="latex-formula">
3) подкоренное выражение должно быть больше либо равно нуля:
a)
б)
\left \{ {{x\leq3 } \atop {x\geq-\frac{1}{2}}} \right." alt="\left \{ {{3-x\geq0 } \atop {2x+1\geq0 }} \right. =>\left \{ {{x\leq3 } \atop {x\geq-\frac{1}{2}}} \right." align="absmiddle" class="latex-formula">
4) квадратное ур-е не имеет решений если D<0</p>
3\\a>\frac{3}{2}" alt="x^2=a-7\\a-7<0\\a<7\\\\x^2=3-2a\\3-2a<0\\2a>3\\a>\frac{3}{2}" align="absmiddle" class="latex-formula">
ОТВЕТ: