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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