Which expression has the simplified form (6x-9)?
Answer and explanation
Correct answer: 3(2x-3)
Using the distributive property, \(3(2x-3)=3\times2x-3\times3=6x-9\). Therefore, option A is correct. In option D, the constant term becomes \(+9\), whereas the required expression has \(-9\). Exam tip: When expanding brackets, multiply the outside number by every term inside the bracket.
Frequently asked questions
What is the correct answer to this question?
3(2x-3)
Why is this the correct answer?
Using the distributive property, \(3(2x-3)=3\times2x-3\times3=6x-9\). Therefore, option A is correct. In option D, the constant term becomes \(+9\), whereas the required expression has \(-9\). Exam tip: When expanding brackets, multiply the outside number by every term inside the bracket.
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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