Which of the following expressions is equal to \(7^2\cdot 7^3\)?
Answer and explanation
Correct answer: \(7^5\)
When powers with the same base are multiplied, their exponents are added: \(7^2\cdot 7^3=7^{2+3}=7^5\). Therefore, option A is correct. Option B incorrectly gives the exponent as 6. Exam tip: in multiplication, keep the common base unchanged and add the exponents.
Frequently asked questions
What is the correct answer to this question?
\(7^5\)
Why is this the correct answer?
When powers with the same base are multiplied, their exponents are added: \(7^2\cdot 7^3=7^{2+3}=7^5\). Therefore, option A is correct. Option B incorrectly gives the exponent as 6. Exam tip: in multiplication, keep the common base unchanged and add the exponents.
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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