Multiple Choice Questions

What is the HCF of a2b4 2a2b2 and ab 7 ndash 4a2b9 ........

Quantitative Aptitude and Numerical Ability (DRDO) (Phase-i and II) Algebra

What is the HCF of a²b⁴ + 2a²b² and (ab)⁷ – 4a²b⁹?

a²b³

a²b²

a³b²

Let f(x) = a²b⁴ + 2a²b² = a²b²(b² + 2)
And g(x) = (ab)⁷ – 4a²b⁹
= a⁷b⁷ – 4a²b⁹
= a²b²(a⁵b⁵ – 4b⁷)
∴HCF of [f(x), g(x)] = a²b²

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