Simplify:
$(5 x - 7) (2 x + 3) (7 x - 6)$

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Solution

given that:
$(5 x - 7) (2 x + 3) (7 x - 6)$

$= (10 x^{2} - x - 21) (7 x - 6)$

$= 70 x^{3} - 7 x^{2} - 147 x - 60 x^{2} + 6 x + 126$

$= 70 x^{3} - 67 x^{2} - 141 x + 126.$

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