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M in (-oo:+oo)
14*M-(M/2-4)^2-12 = 100 // - 100
14*M-(M/2-4)^2-100-12 = 0
14*M-1*(1/2*M-4)^2-100-12 = 0
14*M-1*(1/2*M-4)^2-100-12 = 0
18*M-1/4*M^2-100-16-12 = 0
18*M-1/4*M^2-116-12 = 0
18*M-1/4*M^2-128 = 0
18*M-1/4*M^2-128 = 0
18*M-1/4*M^2-128 = 0
DELTA = 18^2-(-128*(-1/4)*4)
DELTA = 196
DELTA > 0
M = (196^(1/2)-18)/(-1/4*2) or M = (-196^(1/2)-18)/(-1/4*2)
M = 8 or M = 64
(M-8)*(M-64) = 0
(M-8)*(M-64) = 0
( M-64 )
M-64 = 0 // + 64
M = 64
( M-8 )
M-8 = 0 // + 8
M = 8
M in { 64, 8 }
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