Answer:
2.41421
Step-by-step explanation:
0 = -x^2 + 2x + 1
plug in into quadratic formula
x= [tex]\frac{-b\frac{+}{-}\sqrt{b^{2}-4ac } }{2a}[/tex]
[tex]x= \frac{-2\frac{+}{-} \sqrt{2^{2}-4(-1)(1) } }{2(-1)}[/tex]
x= [tex]\frac{-2\frac{+}{-}8 }{-2}[/tex]
{-0.414214,2.41421}
2.41421
hope this helped!
Answer:
C is your answer. guy up there made no sense.
Step-by-step explanation:
vote brainlest to let the people know its right
