Respostas

2014-03-18T03:43:35-03:00
X (2x +3) > 5
2x² + 3x -5 > 0


Delta= b² -4ac = 3² - 4.2.-5 = 9 +40 = 49

baskara= ( -b +/- Vdelta)/2 = (-3 +/- V49 )/2 --->

X1= (-3 +7)/2 = 4/2= 2
X2= (-3 -7)/2 = -10/2 = -5

x>2 ou x>-5