Factored difference and decimal evaluation

Factored difference and decimal evaluation

Secondary 2

3 marks

TGM Original Questions

Factorise \(bn^2-bm^2\) completely. Hence evaluate \(3(64.5)^2-3(35.5)^2\).[3]

Solution:

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Answer:\(b(n-m)(n+m)\); \(8700\).

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