Question 89550
THIS IS THE QUADRATIC FORMULA: {{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
X^2-X-3=0
X=(1+-SQRT[-1^2-4*1*-3])/2*1
X=(1+-SQRT1+12)/2
X=(1+-SQRT13)/2
X=(1+-3.61)/2
X=(1+3.61)/2
X=4.61/2
X=2.31 ANSWER.
X=(1-3.61)/2
X=-2.61/2
X=-1.31 ANSWER.