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a*((a+3)/2)-(a*((2*a-(4*a^2)+6)/4)) = 0
a*((a+3)/2)-(a*((2*a-4*a^2+6)/4)) = 0
(a*(a+3))/2+(-1*a*(2*a-4*a^2+6))/4 = 0
(4*a*(a+3))/(2*4)+(-1*2*a*(2*a-4*a^2+6))/(2*4) = 0
4*a*(a+3)-1*2*a*(2*a-4*a^2+6) = 0
8*a^3 = 0
(8*a^3)/(2*4) = 0
(8*a^3)/(2*4) = 0 // * 2*4
8*a^3 = 0
8*a^3 = 0 // : 8
a^3 = 0
a = 0
a = 0
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