Question 160658
2X^2-9
uSING THE QUADRATIC EQUATION WE GET:
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
X=(0+-SQRT[0^2-4*2*-9])/2*2
X=(+-SQRT72)/4
X=(+-8.4853)/4
X=+-2.12 ANSWER.