Answer:
x= 3 +/- sqrt 5
Step-by-step explanation:
x=[tex]\frac{6+/-\sqrt{-6^{2} -4(1)(4)} }{2(1)} \\[/tex]
x=[tex]\frac{6+/-\sqrt{36-16} }{2}[/tex]
x=[tex]\frac{6+/-\sqrt{20} }{2}[/tex]
x=[tex]\frac{6+/-\sqrt{20/4} }{2}[/tex]
x=[tex]\frac{6+/-\sqrt{4*5} }{2}[/tex]
x=[tex]\frac{6+/-2\sqrt{5} }{2}[/tex]
x=[tex]3+/-\sqrt{5}[/tex]
