show that 3x - 2x2 + 5 = 0 can be written as x = sqrt3((3x+5)/2)
3x - 2x^2 + 5 = 0 rearrange as
2x^2 = 3x + 5 divide both sides b y 2
x^2 = [ 3x + 5 ] / 2 take both roots
x = √ [ (3x + 5) / 2 ] or x = - √ [ (3x + 5) / 2 ]
