Question

Calcule as raizes da função f(x)=4x²+3x-1

Answer 1

Explicação passo-a-passo:

4x² +3x - 1= 0

∆= 3² - 4.4.(-1)

∆= 9 + 16

∆= 25

x = - 3 ±√25/2.4

x = -3 ±5/8

x1= -3 +5/8

x1= 2/8

x1= 1/4

x2= -3 -5/8

x2= -8/8

x2= - 1

S = { 1/4 , - 1}