Question 874146
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Hi
f(x)=7x^2+9x+1   |Format ax^2 + bx + c
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
{{{x = (-9 +- sqrt( 81-28 ))/(14) }}}
 {{{x = (-9 +- sqrt( 53 ))/(14) }}}