Question

Va rog ajutati-ma
dau coroana+70 puncte
Rezolvand in Z ecuatia Ix+2I=5 se obtine multimea solutiilor: a) {-3;7} b){7} c){-3} d){3;-7}
Repede

Answer 1

Salut!

Răspuns: d ✅

| x + 2 | = 5 => 1) x + 2 = 5 sau 2) x + 2 = -5

1) x + 2 = 5

x = 5 - 2

x = 3 ✅

2) x + 2 = -5

x = -5 - 2

x = -7 ✅

S = { 3; -7 } ✅

=> d)