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Factorise 49x^(2) - 16y^(2)....

Factorise `49x^(2) - 16y^(2)`.

Text Solution

Verified by Experts

Let a = 7x and b = 4y .
Using the identify `a^(2) - b^(2) = (a-b) (a +b)` , we have
`49x^(2) - 16y^(2) = (7x)^(2) - (4y)^(2) = (7x-4y) (7x + 4y)`.
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