Which statement is correct about (3ab^2) and (-10ab^2)?
Answer and explanation
Correct answer: They are like terms
Both (3ab^2) and (-10ab^2) have the variable part ab^2: the power of a is 1 and the power of b is 2. Only their coefficients, 3 and -10, are different, so they are like terms. Options B and D are incorrect because like terms may have different coefficients, but their variables and respective powers must match. Exam tip: Ignore coefficients first, then compare every variable and its exponent to identify like terms.
Frequently asked questions
What is the correct answer to this question?
They are like terms
Why is this the correct answer?
Both (3ab^2) and (-10ab^2) have the variable part ab^2: the power of a is 1 and the power of b is 2. Only their coefficients, 3 and -10, are different, so they are like terms. Options B and D are incorrect because like terms may have different coefficients, but their variables and respective powers must match. Exam tip: Ignore coefficients first, then compare every variable and its exponent to identify like terms.
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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