Question 648590
3*3 = 9
5-3 = 2
6+2 = 8

9*2*8 = 144

x^2 = 144

{{{sqrt(144)}}} = (plus or minus) 12
The reason it is (plus or minus) 12 is because {{{-12^2 = 144}}} and {{{12^2 =144}}}. A quadratic has two solutions, always.