Question

Rezolvati in multimea numerelor reale inecuatia: (√5-2)x>√20-4.

AJUTATI-MA VA ROOOGGG!!!DAU COROANA!!!

Answer 1

(√5-2)x>√20-4=>x>(√20-4)/(√5-2)<=>x>(√20-4)(√5+2)/(√5-2)(√5+2)<=>x>(√100+2√20-4√5-8)/(√5²-2²)<=>x>(10-8+4√5-4√5)/(5-4)<=>x>2

x∈(2;+∞)

Answer 2

Explicație pas cu pas:

(√5-2)x>√20-4

x>(√20-4)/(√5-2)

x>(2√5-4)/(√5-2)

x>2(√5-2)/(√5-2)

x>2

x∈(2;+∞).

Bafta!