What is obtained after simplifying (6a+4b-2a+5b)?
Answer and explanation
Correct answer: \(4a+9b\)
Combine like terms in the expression: \(6a-2a=4a\) and \(4b+5b=9b\). Therefore, the simplified form is \(4a+9b\). In \(8a+9b\), \(6a\) and \(-2a\) have been added incorrectly. Exam tip: Add or subtract coefficients only for terms with the same variable and the same power.
Frequently asked questions
What is the correct answer to this question?
\(4a+9b\)
Why is this the correct answer?
Combine like terms in the expression: \(6a-2a=4a\) and \(4b+5b=9b\). Therefore, the simplified form is \(4a+9b\). In \(8a+9b\), \(6a\) and \(-2a\) have been added incorrectly. Exam tip: Add or subtract coefficients only for terms with the same variable and the same power.
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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