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Question
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`(2p^2)/25 - 32q^2`
Solution
We have,
`(2p^2)/25 - 32q^2 = 2(p^2/25 - 16q^2)`
= `2[(p/5)^2 - (4q)^2]`
= `2(p/5 + 4q)(p/5 - 4q)`
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