Question

repede va rog. descompuneti in factori

Answer 1

x^2+4x+1 = (x^2 + 4x + 4) - 3 = (x+2)^2 - (√3)^2 = (x+2+√3)(x+2-√3)

am folosit formulele:

(a+b)^2 = a^2 +2ab + b^2  si

a^2 - b^2 = (a-b)(a+b)