Question 323719
3x^2-7x-11=0
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
x=(7+-sqrt[-7^2-4*3*-11])/2*3
x=(7+-sqrt[49+132])/6
x=(7+-sqrt181)/6
x=(7+-13.45)/6
x=(7+13.45)/6
x=20.45/6
x=3.4 ans.
x=(7-13.45)/6
x=-6.45/6
x=-1.075 ans.
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f(x)=3x^2-7x-11
{{{ graph( 300, 200, -6, 5, -10, 10, 3x^2 -7x -11) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, 3^2 -7x -11).
X=(3.4 & -1.075)