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Subjects
Class 9MathematicsExploring Algebraic IdentitiesQuadratic expressionsHardLevel 74
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In which expression is the coefficient of (x^2) negative?

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Answer and explanation

Correct answer: (-2x^2+7x+3)

In (-2x^2+7x+3), the coefficient of (x^2) is (-2). Exam tip: changing the order of terms does not change the coefficient.

Related tags

CoefficientNegative Leading CoefficientQuadratic

Frequently asked questions

What is the correct answer to this question?

(-2x^2+7x+3)

Why is this the correct answer?

In (-2x^2+7x+3), the coefficient of (x^2) is (-2). Exam tip: changing the order of terms does not change the coefficient.

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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  1. 1Which expression is a quadratic expression?
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  3. 3If a, b and c are constants, which condition is necessary for \(ax^2+bx+c\) to be a quadratic expression in x?
  4. 4If a quadratic expression has the general form \(ax^2+bx+c\), which condition on \(a\) is necessary for it to be quadratic?
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  6. 6Which of the following quadratic expressions can be factorised using the identity for the difference of two squares?
  7. 7The length of a rectangular garden is \(x+5\) metres and its breadth is \(x+3\) metres. Which quadratic expression represents its area?
  8. 8Under which condition can the quadratic trinomial \(x^2+px+q\) be classified as a perfect-square trinomial?
  9. 9Which is the expansion of ((x+3)(x+2))?
  10. 10Which of the following expressions can be written as a difference of squares of two binomials?
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