Question

(х-1)(х+1)<2 (х-5)-х (х-3)​

Answer 1

x²-1<2x-10-x²+3x

x²+x²-2x-3x-1+10<0

2x²-5x+9<0

D= 25-72= -47

D<0

Ответ: x∈∅