Factorise-7 25 m2-90 m n-81 n2

25m2 + 90mn + 81n2 = (5m)2 + 2 times; 5m times; 9n + (9n)2 = (5m + 9n)2 nbsp; nbsp; nbsp; [a2 + 2ab + b2 = (a + b)2] = (5m + 9n) (5m + 9n) ther ...

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Factorisation by Common Factors

Factorise:7 2...

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Factorise:

(7) 25m² + 90mn + 81n²

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