Factorise : 49 (x-y)^2 - 9 (2x +y)^2...

Factorise : `49 (x-y)^2 - 9 (2x +y)^2`

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ICSE-FACTORISATION-EXERCISE 13(C)

Factorise : 16-9x^2
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Factorise : (5a - 3b)^2 - 16b^2
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Factorise : a^4 - (a^2 - 3b^2)^2
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Factorise : (5a - 2b)^2 - (2a - b)^2
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Factorise : 1 - 25 (a+b)^2
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Factorise : 4 (2a + b)^2 - (a-b)^2
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Factorise : 25 (2x + y)^2 - 16 (x-y)^2
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Factorise : 49 (x-y)^2 - 9 (2x +y)^2
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Factorise : (4.5)^2 - (1.5)^2
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Factorise : 75 (x+y)^2 - 48 (x-y)^2
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Factorise : a^(2) + 4a + 4 -b^(2)
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Factorise : a^(2) - b^(2) - 2b -1
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Factorise : x^(2) + 6x + 9 - 4y^(2)
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