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Question
Factorise the following.
x2 – 17x + 60
Sum
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Solution
We have,
x2 – 17x + 60
= x2 – (12 + 5)x + 60
= x2 – 12x – 5x + 60
= x(x – 12) – 5(x – 12)
= (x – 12)(x – 5)
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Chapter 7: Algebraic Expression, Identities and Factorisation - Exercise [Page 235]
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