Factorisation
Hong Kong
Stage 4 - Stage 5
Difference of two squares
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
Approx a minute
Which positive integer must go in the spaces to make the statement true?
What expression must go in the space to make the statement true?
One linear factor of $x^2-49$x2−49 is $x+7$x+7. What is the other factor?
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