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प्रश्न
Factorise the following expression.
`"p"^2-1/25`
योग
उत्तर
`"p"^2-1/25`
= `("p")^2-(1/5)^2`
= `("p"+1/5)("P"-1/5)` ...[∵ a2 − b2 = (a + b) (a − b)]
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