Answer:
[tex]x=0.00009028, x=-2.999909725[/tex]
Step-by-step explanation:
Use the quadratic formula:
[tex]x=\dfrac{-b \pm \sqrt{b^2-4ac} }{2a}[/tex]
when [tex]ax^2+bx+c=0[/tex]
Therefore, for [tex]144000x^2+431974x-39=0[/tex]
a = 144,000 b = 431,974 and c = -39
Substituting this data into the quadratic formula:
[tex]x=\dfrac{-431974 \pm \sqrt{431974^2-4(144000)(-39)} }{2(144000)}[/tex]
[tex]x=0.00009028, x=-2.999909725[/tex]
