Find the product:
$(3 x + 5) (5 - 2 x)$

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Solution

$(3 x + 5) (5 - 2 x)$
$= 3 x \times 5 - 3 x \times 2 x + 5 \times 5 - 5 \times 2 x$
$= 15 x - 6 x^{2} + 25$
$= - 6 x^{2} + 5 x + 25$

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