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If (4^{x+1}=128), what is the value of (x)?
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Answer and explanation
Correct answer: (,\dfrac{5}{2},)
Since (4^{x+1}=2^{2x+2}) and (128=2^7), we get (2x+2=7) and (x=\dfrac{5}{2}). In exams, write both sides with the same base.
Frequently asked questions
What is the correct answer to this question?
(,\dfrac{5}{2},)
Why is this the correct answer?
Since (4^{x+1}=2^{2x+2}) and (128=2^7), we get (2x+2=7) and (x=\dfrac{5}{2}). In exams, write both sides with the same base.
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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