MCQ
In linear programming, objective function and objective constraints are:
- ASolved
- ✓Linear
- CQuadratic
- DAdjacent
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$2 x+y-z=3$
$x-y-z=\alpha$
$3 x+3 y+\beta z=3$
has infinitely many solution, then $\alpha+\beta-\alpha \beta$ is equal to .... .