Question 96922
2x^2+11x-1
Use the quadratic formula
a=2; b=11; c=-1
x = [-b +- sqrt(b^2-4ac)]/(2a)
Your problem:
x = [-11 +- sqrt(121-4*2*-1)]/(2*2)

x = [-11 +- sqrt(129)]/4

x = [-11 + sqrt(129)]/4 or x = [-11 - sqrt(129)]/4

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Cheers,
Stan H.