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Question
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
`x^2/4 - 2x + 4`
Sum
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Solution
We have,
`x^2/4 - 2x + 4`
= `(x/2)^2 - 2 xx x/2 xx 2 + 2^2`
= `(x/2 - 2)^2`
= `(x/2 - 2)(x /2 - 2)`
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Chapter 7: Algebraic Expression, Identities and Factorisation - Exercise [Page 234]
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