Задача 56390 log2(x2+x-6)=2...

5fe1ef281c6d1142ab5160b2

22.12.2020 16:08:03

log2(x2+x-6)=2

5f3ea7e3faf909182968ddd9

22.12.2020 16:19:09

★

x^2+x-6=2^2
x^2+x-6-4=0
x^2+x-10=0
D=1-4*(-10)=41

x_(1)=(-1)-sqrt(41))/2 или x_(2)=(-1+sqrt(41))/2