Question 696342
 2x^2 + 72 =0
2(X^2+36)=0
 {{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
X=(-0+-SQRT(0^2-4*1*36))/2*1
X=(0+-SQRT(-144))/2
X=(0+-12i)/2
X=0+6i ANS.
X=0-6i ANS.