Question 68671

{{{x^2 + 7x - 1 = 0}}}
<br>You can use Quadratic Formula
ax^2 +bx + c = 0, therefore a = 1, b = 7 c = -1
<br>{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
{{{x = (-7 +- sqrt( 7^2-4*1*-1 ))/(2*1) }}} 
{{{x = (-7 +- sqrt( 49+4))/(2)}}} 
{{{x = (-7 +- sqrt(53))/(2)}}}

<br>You got the correct answer .