Mister Exam
x2a2+y2b2+z2c2=1 canonical form
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-1 + a2*x2 + b2*y2 + c2*z2 = 0
$$a_{2} x_{2} + b_{2} y_{2} + c_{2} z_{2} - 1 = 0$$
a2*x2 + b2*y2 + c2*z2 - 1 = 0