Question

20 divizibil cu x+2

raspuns rapid va rog??

Answer 1

$20 \: \: \vdots \: \: x + 2 = > x + 2 \: \in \: D_{20}$

$D_{20}=\left\{\pm1,\pm2,\pm4,\pm5,\pm10,\pm20\right\}$

$1)x + 2 = - 1 = > x = - 3$

$2)x + 2 = 1 = > x = - 1$

$3)x + 2 = - 2 = > x = - 4$

$4)x + 2 = 2 = > x = 0$

$5)x + 2 = - 4 = > x = - 6$

$6)x + 2 = 4 = > x = 2$

$7)x + 2 = - 5 = > x = - 7$

$8)x + 2 = 5 = > x = 3$

$9)x + 2 = - 10 = > x = - 12$

$10)x + 2 = 10 = > x = 8$

$11)x + 2 = - 20 = > x = - 22$

$12)x + 2 = 20 = > x = 18$