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प्रश्न
Use a suitable identity to get the following products.
`(3a - 1/2)(3a - 1/2)`
उत्तर
The product will be as follows
`(3a - 1/2)(3a - 1/2) = (3a - 1/2)^2`
`= (3a)^2 - 2(3a) (1/2) + (1/2)^2 [(a-b)^2 = a^2 - 2ab + b^2]`
= `9a^2 - 3a + 1/4`
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