What is the value of the expression \(2+3^2\cdot2\)?
Answer and explanation
Correct answer: 20
Evaluate the exponent first: \(3^2=9\). Then multiply to get \(9\cdot2=18\), and finally add \(2+18=20\). Therefore, option A is correct. Option D results from omitting the initial 2 in the final addition. Exam tip: follow the order exponents, multiplication/division, and then addition/subtraction.
Frequently asked questions
What is the correct answer to this question?
20
Why is this the correct answer?
Evaluate the exponent first: \(3^2=9\). Then multiply to get \(9\cdot2=18\), and finally add \(2+18=20\). Therefore, option A is correct. Option D results from omitting the initial 2 in the final addition. Exam tip: follow the order exponents, multiplication/division, and then addition/subtraction.
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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