Teaching PSTET Paper 1 & 2 Mock Test 2024 Quantitative Aptitude Algebra Quadratic Equation

If -2 is a common root of the quadratic equations ay2 + ay + 3 = 0 and y2 + y + b = 0 then a2b is : 

1
3
2
\(-\frac{9}{2}\)
3
\(\frac{9}{2}\)
4
-6
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