Question

Aratati ca in ecuatia x√3 + x = √12 + 2 solutia este x=2

Answer 1

Răspuns:

x√3 + x = √12 + 2

x√3 + x = √(4×3) + 2

x√3 + x = 2√3 + 2

x × (√3 + 1) = 2 × (√3 + 1)     / : (√3 + 1)

x = 2  ⇒ adevarat