Question

Am ajuns la ecuatia m²+m=2, ce pot face mai departe? La sfarsit apare m∈{-2;1}

Answer 1

=> m^2+m-2=0

(m-1)(m+2)=0=>

Pt m-1=0=>m=1

Pt m+2=0=>m= -2

m € {-2,1}