Which polynomial is obtained by simplifying (6x+7x-3)?
Answer and explanation
Correct answer: \(13x-3\)
\(6x\) and \(7x\) are like terms because both have the variable \(x\) with exponent 1. Adding their coefficients gives \(6+7=13\), so the expression becomes \(13x-3\). \(42x-3\) is incorrect because the coefficients are added, not multiplied. Exam tip: Combine only like terms.
Frequently asked questions
What is the correct answer to this question?
\(13x-3\)
Why is this the correct answer?
\(6x\) and \(7x\) are like terms because both have the variable \(x\) with exponent 1. Adding their coefficients gives \(6+7=13\), so the expression becomes \(13x-3\). \(42x-3\) is incorrect because the coefficients are added, not multiplied. Exam tip: Combine only like terms.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Linear polynomials.
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