Topics
Factorisation
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India
Class VIII

Difference of two squares

Lesson
Practice

Interactive practice questions

Answer the following.

a

Expand $\left(x+5\right)\left(x-5\right)$(x+5)(x−5).

b

Hence factorise $x^2-25$x2−25.

Easy
1min

Which positive integer must go in the spaces to make the statement true?

Easy
< 1min

What expression must go in the space to make the statement true?

Easy
< 1min

One linear factor of $x^2-49$x2−49 is $x+7$x+7. What is the other factor?

Easy
< 1min
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Outcomes

8.A.AE.3

Identities (a ± b)^2 = a^2 ± 2ab + b^2, a^2 – b^2 = (a – b) (a + b) Factorisation (simple cases only) as examples the following types a(x + y), (x ± y)^2, a^2 – b^2, (x + a).(x + b)

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