Answer:
{ - [tex]\frac{4}{3}[/tex] , 1 }
Step-by-step explanation:
3x² + x - 4 = 0
D = 1² - 4(3)(- 4) = 49 = 7²
[tex]x_{1}[/tex] = ( - 1 + 7) ÷ 2(3) = 1
[tex]x_{2}[/tex] = ( - 1 - 7) ÷ 2(3) = - [tex]\frac{4}{3}[/tex]
