Question

Rezolvaţi ecuaţia in R: 20:|x+1|=4

Answer 1

$20 \div |x + 1| = 4$

$|x + 1| = 20 \div 4$

$|x + 1| = 5$

$1)x + 1 = 5$

$x = 5 - 1$

$x = 4\:\in\:\mathbb{R}$

$2)x + 1 = - 5$

$x = - 5 - 1$

$x = - 6\:\in\:\mathbb{R}$