Решите неравенство (5x+2)(x-1)-(2x+1)(2x-1)<27

Question

Решите неравенство
(5x+2)(x-1)-(2x+1)(2x-1)<27

Answer 1

(5x+2) (x-1)-(2x+1)(2x-1) <27<br>(5x+2) (x-1)-(2x+1)(2x-1)=0
5x2-5x+2x-2-4x2-1=0
2x=1,5