Question

Find (3x-1/2x) (3x-1/2x) using suitable identity

Answer 1

$(3x - \frac{1}{2x} )(3x - \frac{1}{2x} ) \\ ( {3x - \frac{1}{2x} )}^{2} \\ 9 {x}^{2} + \frac{1}{4 {x}^{2} } - 3$

Answer 2

Solution:-

☆ ( 3x - 1/2x)(3x - 1/2x)

:- ( a - b ) ( a - b ) = ( a - b ) *2

= ( 3x - 1/2x)*2

= (3x)*2 + (1/2x)*2 - 2 (3x)(1/2x)

= 9x*2 + 1/4x*2 - 6x/2x

= 9x*2 + 1/4x*2 - 3

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