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Subjects
Mathematics CBSE
Class 9
Polynomials
Textbook Questions

28. Exemplar-Exercise Problems I

Exercise condition:

3 m.

1. The value of \(249^2 – 248^2\) is

\(477\)
\(1^2\)
\(487\)
\(497\)

2. The factorisation of \(4x^2 + 8x + 3\) is

\((2x + 1) (2x + 3)\)
\((x + 1) (x + 3)\)
\((2x –1) (2x –3)\)
\((2x + 2) (2x + 5)\)

3. Which of the following is a factor of \((x+ y)^3 – (x^3 + y^3)\)?

\(xy^2\)
\(3xy\)
\(x^2 + y^2 + 2 xy\)
\(x^2 + y^2 – xy\)

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