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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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