What is the simplified form of (2x^2-3x+5x^2-x)?
Answer and explanation
Correct answer: \(7x^2-4x\)
Here, \(2x^2\) and \(5x^2\) are like terms, so their sum is \(7x^2\). Similarly, \(-3x\) and \(-x\) add to \(-4x\). Therefore, the simplified form is \(7x^2-4x\). In option C, the \(x^2\) terms have been added incorrectly. Exam tip: add or subtract only terms with the same variable and the same exponent.
Frequently asked questions
What is the correct answer to this question?
\(7x^2-4x\)
Why is this the correct answer?
Here, \(2x^2\) and \(5x^2\) are like terms, so their sum is \(7x^2\). Similarly, \(-3x\) and \(-x\) add to \(-4x\). Therefore, the simplified form is \(7x^2-4x\). In option C, the \(x^2\) terms have been added incorrectly. Exam tip: add or subtract only terms with the same variable and 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.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
