Question

Resolva as inequalções (2x+1)(2-x)←0​

Answer 1

4x -2x² +2 -x < 0

-2x² +3x +2 < 0

9 -4 * -4

9 +16

5²

(-3 ± 5)/-4

(3 ± 5)/4

8/4 = 2 ;-2/4 = -1/2

a < 0 → Positivo dentre

x > 2 ou x < -1/2