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Which statement is correct for (r^3s^2) and (r^2s^3)?

Answer and explanation

Correct answer: They are unlike terms because variable powers are different

Like terms must have the same variables raised to the same powers. In \(r^3s^2\), r has exponent 3 and s has exponent 2. In \(r^2s^3\), r has exponent 2 and s has exponent 3. The powers of both variables are therefore different in corresponding positions. Even though the same letters occur, the variable parts are not identical, so the terms are unlike. Option B is correct.

To see why option D is not suitable, multiplying the terms would produce a different expression, \(r^5s^5\), but that is not their common variable part and is not the test for like terms. Constants contain no variables, so C is false. Option A is false because matching letters alone do not make terms like. Comparing the exponent pair \((3,2)\) with \((2,3)\) clearly shows the difference and confirms B.

Related tags

Algebraic-ExpressionsUnlike-TermsError-Analysis

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