Решите неравенство (2,5х+3)*(4х-1)-2,5х(4х+2)<3

Question

Решите неравенство (2,5х+3)*(4х-1)-2,5х(4х+2)<3

Answer 1

(2,5х+3)*(4х-1)-2,5х(4х+2)<3</span>

просто раскрыть скобки

10x^2-2,5x+12x-3-10x^2-5x<3</span>

4,5x-3<3</span>

4,5x<6</span>

x<60/45</span>

x<12/9</span>

x<4/3</span>

Answer 2

neslojno... otvet tak x<60/45ili12/9. togda (-<>;60/45 ili 12/9)