Answer :
the answers are x=7 or x=-2
[tex]x=-b[/tex]+[tex] \sqrt{b ^{2} -4ac} [/tex]/2
x=5 + [tex] \sqrt{(-5) ^){2}-4(1)(-14 } [/tex]/2
x=5 +[tex] \sqrt{25+56} [/tex]/2
x=5 +[tex] \sqrt{81} [/tex]/2
x=5 +[tex] \sqrt{81} [/tex]/2.....x=7
or
x=5 - [tex] \sqrt{81} [/tex]/2....x=-2
[tex]x=-b[/tex]+[tex] \sqrt{b ^{2} -4ac} [/tex]/2
x=5 + [tex] \sqrt{(-5) ^){2}-4(1)(-14 } [/tex]/2
x=5 +[tex] \sqrt{25+56} [/tex]/2
x=5 +[tex] \sqrt{81} [/tex]/2
x=5 +[tex] \sqrt{81} [/tex]/2.....x=7
or
x=5 - [tex] \sqrt{81} [/tex]/2....x=-2
