How many variables are used in the expression (3x^2y+4xy^2-5)?
Answer and explanation
Correct answer: 2
In \(3x^2y+4xy^2-5\), the only distinct variables are \(x\) and \(y\), so there are 2 variables. The exponent 2 in \(x^2\) and \(y^2\) does not create an additional variable, and \(-5\) is a constant. Exam tip: count distinct letters representing variables, not their powers.
Frequently asked questions
What is the correct answer to this question?
2
Why is this the correct answer?
In \(3x^2y+4xy^2-5\), the only distinct variables are \(x\) and \(y\), so there are 2 variables. The exponent 2 in \(x^2\) and \(y^2\) does not create an additional variable, and \(-5\) is a constant. Exam tip: count distinct letters representing variables, not their powers.
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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