Answer:
(1+√7,0),(1−√7,0)
Step-by-step explanation:
You can't factor the expression evenly, so use the quadratic formula.
a = 2
b= -4
c= -12
[tex]\frac{-b+\sqrt{b^{2}-4ac } }{2a}[/tex]
[tex]\frac{4+\sqrt{16{}-4(2)(-12)} }{2(2)}[/tex]
[tex]\frac{4+\sqrt{16-4(-24)} }{4}[/tex]
[tex]\frac{4+\sqrt{16+96} }{4}[/tex]
[tex]\frac{4+\sqrt{112} }{4}[/tex]
[tex]\sqrt{112} = 4\sqrt{7}[/tex]
End result: (1+√7,0),(1−√7,0)
