Question 80808
solve by using quadratic formula 
5x^2+x+7=0
x=[-b+-sqrt(b^2-4ac)]/(2a)
x=[-1+-sqrt(1^2-4*5*7]/(2*5)
x=[-1+-sqrt(-139))]/(10)
x=(-1/10) + (1/10)sqrt(139)i or x=(-1/10) - (1/10)sqrt(139)i
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Cheers,
Stan H.