Examples Of Solving Quadratic Equations Using Quadratic Formula...., Need Help..., Thanks

Examples of solving quadratic equations using quadratic formula....

need help...
thanks

Answer:

x²+10x+9=0

a=1 b=10 c=9

x=-10√(10)²-4(1)(9)

           2(1)

-10√100-36

         2

-10±64

     2

x=-10±8

      2

x=-5±4

xsub1=-5+4=-1

xsub2=-5-4=-9


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