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प्रश्न
Use the formula to multiply the following.
`(x/5+6)(x/5-6)`
योग
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उत्तर
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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