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If (3^{2x-1}=81), what is the value of (x)?
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Answer and explanation
Correct answer: (,\dfrac{5}{2},)
Since (81=3^4), we get (2x-1=4) and (x=\dfrac{5}{2}). In exams, equate exponents when the bases are the same.
Frequently asked questions
What is the correct answer to this question?
(,\dfrac{5}{2},)
Why is this the correct answer?
Since (81=3^4), we get (2x-1=4) and (x=\dfrac{5}{2}). In exams, equate exponents when the bases are the same.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Polynomials. Topic: Operations on real numbers and the laws of exponents.
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