What is the simplified form of (3x^2 + 5x^2 - 2x^2)?
Answer and explanation
Correct answer: 6x^2
All the terms have the same variable and the same exponent, so they are like terms. Combine their coefficients: 3 + 5 - 2 = 6. Therefore, the simplified form is 6x^2. Option C is incorrect because it treats the negative term as positive. Exam tip: When combining like terms, operate only on the coefficients; the variable and its exponent remain unchanged.
Frequently asked questions
What is the correct answer to this question?
6x^2
Why is this the correct answer?
All the terms have the same variable and the same exponent, so they are like terms. Combine their coefficients: 3 + 5 - 2 = 6. Therefore, the simplified form is 6x^2. Option C is incorrect because it treats the negative term as positive. Exam tip: When combining like terms, operate only on the coefficients; the variable and its exponent remain unchanged.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Polynomials. Topic: Operations on real numbers and the laws of exponents.
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