Let \(a,b,c\) be positive integers such that \(b/a\) is an integer. If \(a,b,c\) are in geometric progression and the arithmetic mean of \(a,b,c\) is \(b + 2\), then the value of \(\frac{a^{2} + a - 14}{a + 1}\) is - Math Practice Question | divineJEE