**Question:**

For any three positive real numbers $a$, $b$ and $c$, $9\left(25 a^{2}+b^{2}\right)+25\left(c^{2}-3 a c\right)=15 b(3 a+c)$. Then $:$

Correct Option: 3

JEE Main Previous Year 2017

**Solution:**

For any three positive real numbers $a$, $b$ and $c$, $9\left(25 a^{2}+b^{2}\right)+25\left(c^{2}-3 a c\right)=15 b(3 a+c)$. Then $:$

Correct Option: 3

JEE Main Previous Year 2017
**Solution:**