What is obtained after simplifying (11a^2-4a+6a-5a^2)?
Answer and explanation
Correct answer: \(6a^2+2a\)
Combine like terms: \(11a^2-5a^2=6a^2\) and \(-4a+6a=2a\). Therefore, the simplified expression is \(6a^2+2a\). In option A, the coefficients of the squared terms have been added incorrectly. Exam tip: Add or subtract only terms that have the same variable with the same exponent.
Frequently asked questions
What is the correct answer to this question?
\(6a^2+2a\)
Why is this the correct answer?
Combine like terms: \(11a^2-5a^2=6a^2\) and \(-4a+6a=2a\). Therefore, the simplified expression is \(6a^2+2a\). In option A, the coefficients of the squared terms have been added incorrectly. Exam tip: Add or subtract only terms that have the same variable with the same exponent.
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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