1.

9x-4(6x) +3(4x)​​​​

Answer»

9x - 4 x 6x + 3 x 4x

= (32)x - 4 x 3x x 2+ 3 x (22)x

= (3x)2 - 2 x 3x x 2x + (2x)2 + 2 x 22x - 2 x 3x x 2x

= (3x - 2x)2 + 2 x 2x(2x- 3x)

= (3x - 2x)(3x-2x- 2 x 2x)

= (3x - 2x)(3x - 3 x 2x)

= 3(3x - 2x)(3x-1- 2x)



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