Question

log2(х^2-3х-10)=3 помогите пож

Answer 1

$x^{2} -3 x-10= 2^{3}=8 \ x^{2} -3 x-18=0 \ D=9+4*18=81 \ x= frac{3+-D}{2} \ x_{1} =-3 \ x_{2} =6$