12. Scrieti sub forma de intervale multimile: a) A = {x apartine R | [tex]\sqrt{(2x+3)^{2} } \leq 9[/tex]} b) A = {x apartine R | [tex]\sqrt{(2x-7)^{2}} \ \text

12. Scrieti sub forma de intervale multimile: a) A = {x apartine R | [tex]\sqrt{(2x+3)^{2} } \leq 9[/tex]}

b) A = {x apartine R | [tex]\sqrt{(2x-7)^{2}} \ \textless \ 3 }[/tex]


DAU COROANAA !!!