What is the simplified form of \(1\cdot a+5\)?
Answer and explanation
Correct answer: \(a+5\)
By the multiplicative identity property, multiplying a variable by 1 does not change it: \(1\cdot a=a\). Therefore, \(1\cdot a+5=a+5\). \(6a\) is not correct because \(a\) and 5 are unlike terms and cannot be added. Exam tip: first simplify any multiplication by 1 in an expression.
Frequently asked questions
What is the correct answer to this question?
\(a+5\)
Why is this the correct answer?
By the multiplicative identity property, multiplying a variable by 1 does not change it: \(1\cdot a=a\). Therefore, \(1\cdot a+5=a+5\). \(6a\) is not correct because \(a\) and 5 are unlike terms and cannot be added. Exam tip: first simplify any multiplication by 1 in an expression.
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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