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Simplify: (3x-2)(x-1)(3x+5)...

Simplify: `(3x-2)(x-1)(3x+5)`

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`(3x-2)(x-1)(3x+5)`
`= {(3x – 2) (x – 1)} × (3x + 5)` [∴Multiplication in associative]
` = {3x (x -1) -2 x -1)} × (3x + 5) `
`= (3x^2 -3x- 2x + 2) xx (3x + 5) `
`= (3x^2 – 5x + 2) (3x + 5)`
`= 3x^2 xx (3x + 5) – 5x (3x + 5) + 2 (3x + 5)`
` = (9x^3 + 15x^2) + (-15x^2 – 25x) + (6x + 10)`
`= 9x^3 + 15x^2 – 15x^2 -25x + 6x + 10`
`= 9x^3 -19x + 10`
Hence simplified.
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