-0.7
the quadratic formula is
[tex] \frac{ - b + - \sqrt{ {b}^{2} - 4ac } }{2a} [/tex]
substitute the correct values in
[tex] \frac{ - ( - 5) + - \sqrt{ {( - 5)}^{2} - 4(1)( - 4) } }{2(1)} [/tex]
where it says +- you would type this into your calculator with + AND THEN - to get two separate answers.
when you type + you get the answer of: 5.701562119...
when you type - you get the answer of:
-0.7015621187...
when you round to the nearest tenth you get -0.7
hope this helps! :)
have a great day ~ •lipika•
