Which of the following is a quadratic expression in the variable \(y\)?
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Answer and explanation
Correct answer: \(7y^2-3y+4\)
A quadratic expression has highest variable power 2, with non-negative integer powers. In \(7y^2-3y+4\), the highest power is 2. Option B is cubic. Exam tip: check the greatest exponent first.
Frequently asked questions
What is the correct answer to this question?
\(7y^2-3y+4\)
Why is this the correct answer?
A quadratic expression has highest variable power 2, with non-negative integer powers. In \(7y^2-3y+4\), the highest power is 2. Option B is cubic. Exam tip: check the greatest exponent first.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Exploring Algebraic Identities. Topic: Quadratic expressions.
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