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Question
विस्तार सूत्र की सहायता से गुणनफल ज्ञात करो।
`(x/5+6)(x/5-6)`
Sum
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Solution
It is known that, (a + b) (a − b) = a2 − b2.
`(x/5+6)(x/5-6)`
= `(x/5)^2-(6)^2`
= `x^2/25-36`
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Chapter 14: बैजिक सूत्र - वर्ग विस्तार - प्रश्नसंग्रह 51 [Page 71]
