What do we get by expanding (2(a+3))?
Answer and explanation
Correct answer: \(2a+6\)
Using the distributive property, multiply 2 by every term inside the bracket: \(2(a+3)=2\times a+2\times 3=2a+6\). Hence, \(2a+6\) is correct. In \(2a+3\), the constant 3 has not been multiplied by 2. Exam tip: When expanding brackets, multiply the outside factor by each term inside.
Frequently asked questions
What is the correct answer to this question?
\(2a+6\)
Why is this the correct answer?
Using the distributive property, multiply 2 by every term inside the bracket: \(2(a+3)=2\times a+2\times 3=2a+6\). Hence, \(2a+6\) is correct. In \(2a+3\), the constant 3 has not been multiplied by 2. Exam tip: When expanding brackets, multiply the outside factor by each term inside.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Algebraic expressions.
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