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Rezolvaţi ecuaţia in R: 20:|x+1|=4

Răspuns :

[tex]20 \div |x + 1| = 4[/tex]

[tex] |x + 1| = 20 \div 4[/tex]

[tex] |x + 1| = 5[/tex]

[tex]1)x + 1 = 5[/tex]

[tex]x = 5 - 1[/tex]

[tex]x = 4\:\in\:\mathbb{R}[/tex]

[tex]2)x + 1 = - 5[/tex]

[tex]x = - 5 - 1[/tex]

[tex]x = - 6\:\in\:\mathbb{R}[/tex]