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If (g^2=625) then what is the positive value of (g)?
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Answer and explanation
Correct answer: 25
Since \(25^2=25\times25=625\), the positive value satisfying \(g^2=625\) is \(g=25\). Although \(-25\) also has square 625, the question specifically asks for the positive value. Exam tip: a positive number can have two square roots, but its positive square root is unique.
Frequently asked questions
What is the correct answer to this question?
25
Why is this the correct answer?
Since \(25^2=25\times25=625\), the positive value satisfying \(g^2=625\) is \(g=25\). Although \(-25\) also has square 625, the question specifically asks for the positive value. Exam tip: a positive number can have two square roots, but its positive square root is unique.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Exponents.
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