state gov MP Excise Constable Mock Test Series 2025 Quantitative Aptitude Algebra Identities

If sides of cuboid in A.P a, b and c respectively and a² + b² + c² = 14, find the value of (9b² - ab - ac - bc).

1

11 - (ab + bc + ac)

2

(ab + bc + ac)

3

12 + (ab + bc + ac)

4

14 + (ab + bc + ac)

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