WBBSEClass XMathematicsQuadratic Surds01 Mark2023 Easy

QQuestion

If mean proportional of (a2bc) and (4bc) is x, then the value of x is _____.

Exam-ready answer • 01 Mark

Answer

± 2abc

Explanation

\text{a²bc}\over \text{x}=\text{x} \over \text{4bc}

or, x² = 4a²b²c²

or, x = √4a²b²c² = ± 2abc

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