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X for 9x^+98x=2 using quadratic Formula. 
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Raquelviz
9x^2+98x=2
9x^2+98x-2=0
-b+-sqrt of b^2-4ac
            2a
substitute
a=9
b=98
c=-2

-(98)+-sqrt of (98)^2-4(9)(-2)
              2(9)
-98+-sqrt of 9604+72
               18
-98+-sqrt of 9676
             18
x1=-98+sqrt of 9676
               18
x2=-98-sqrt of 9676
                18

hope it will help you ^_^