Matematică
rusumihai314
2016-04-20 14:36:24
|5-|2x-11||=8 va rog dau coroana
Răspunsuri la întrebare
evely
2016-04-20 19:43:03

Pentru |5-2x|-11=8 [latex]ig{|}5-2xig{|}=8+11[/latex] [latex]ig{|}5-2xig{|}=19[/latex] [latex]~~[/latex] [latex]5-2x=19[/latex] [latex]5-2x=-19[/latex] [latex]~~[/latex] [latex]x=-7[/latex] [latex]x=12[/latex] [latex]~~[/latex] [latex]x_{1}=fbox{-7}[/latex] [latex]x_{2}=fbox{12}[/latex] [latex]~~[/latex] [latex]~~[/latex] Pentru |5| |2x-11| = 8 [latex]5cdotig{|}2x-11ig{|}=8[/latex] [latex]ig{|}2x-11ig{|}=dfrac{8}{5}[/latex] [latex]~~[/latex] [latex]2x-11=dfrac{8}{5}[/latex] [latex]2x-11=-dfrac{8}{5}[/latex] [latex]~~[/latex] [latex]x=dfrac{63}{10}[/latex] [latex]x=dfrac{47}{10}[/latex] [latex]~~[/latex] [latex]x_{1}={dfrac{61}{10}}[/latex] [latex]x_{2}={dfrac{47}{10}}[/latex] [latex]~~[/latex] [latex]~~[/latex] Pentru |5-2x-11|=8 [latex]ig{|}-6-2xig{|}=8[/latex] [latex]~~[/latex] [latex]-6-2x=8[/latex] [latex]-6-2x=-8[/latex] [latex]~~[/latex] [latex]x=-7[/latex] [latex]x=1[/latex] [latex]~~[/latex] [latex]x_{1}=fbox{-7}[/latex] [latex]x_{2}=fbox{1}[/latex] Alegi tu care e bună! Că eu nu ştiu cum ai pus modulul!

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