Question 261246
part a: {{{3x^2-7x-5=0}}}
using the quadratic, we get
{{{x = (7 +- sqrt( 49-4*3*(-5) ))/(6) }}} 
simplifying, we get
{{{x = (7 +- sqrt( 109 ))/(6) }}} 
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part b: x-intercept is 
{{{x = (7 +- sqrt( 109 ))/(6) }}} 
or x ~ -.573 ; x ~ 2.907