Mister Exam

8x21+16x1x2+14x1x3−28x2+32x2x3+14x23 canonical form

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-28*x2 + 8*x21 + 14*x23 + 14*x1*x3 + 16*x1*x2 + 32*x2*x3 = 0
$$16 x_{1} x_{2} + 14 x_{1} x_{3} + 32 x_{2} x_{3} - 28 x_{2} + 8 x_{21} + 14 x_{23} = 0$$
16*x1*x2 + 14*x1*x3 + 32*x2*x3 - 28*x2 + 8*x21 + 14*x23 = 0