- A$2370$
- B$2130$
- ✓$2290$
- D$2210$
$\lambda(10+4 \mu)+(5-3 \mu)+(-10)=0$
$(\mu+5)(4 \mu+10)+5-3 \mu-10=0$
$\mu=-15 ; \lambda=5 / 4$
$\mu=-3 ; \lambda=2$
$\text { Hence } \sum_{(\lambda, \mu) \in S} 80\left(\lambda^2+\mu^2\right)$
$=80\left(\frac{250}{16}+13\right)$
$=1250+1040$
$=2290$
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