MCQ
If $n \in N,$ then $11^{n+2}+ 12^{2n+1}$ is divisible by:
- A$113$
- B$123$
- ✓$133$
- DNone of these
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$x^2+y^2+5 x-3 y+4=0 .$
Then which of the following statements is (are) TRUE?
$(A)$ $\alpha=-1$ $(B)$ $\alpha \beta=4$ $(C)$ $\alpha \beta=-4$ $(D)$ $\beta=4$