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Question
Factorise: a2 - 4b2
Sum
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Solution
a2 - 4b2
= a2 - (2b)2
= (a + 2b)(a - 2b)
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Factorise: a2 - 4b2
a2 - 4b2
= a2 - (2b)2
= (a + 2b)(a - 2b)