(1-х)(3-4х)-(2х+1)(2х-1)<11

Question

(1-х)(3-4х)-(2х+1)(2х-1)<11</p>

Answer 1

(1-х)(3-4х)-(2х+1)(2х-1)<11</p>

3-4x-3x+4x^2-4x^2+1<11</p>

-7x<11-4</p>

-7x<7</p>

x>-1

(-1; +бесконечность)