Multiply $(2 x + 5)$ and $(4 x - 3)$ .

4 x^{2} + 14 x - 15

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4 x^{2} + 14 x + 15

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8 x^{2} + 14 x - 15

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8 x^{2} + 14 x + 15

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Solution

The correct option is C $8 x^{2} + 14 x - 15$
$(2 x + 5) \times (4 x - 3)$
$= 2 x (4 x - 3) + 5 (4 x - 3)$
$= 8 x^{2} - 6 x + 20 x - 15$
$= 8 x^{2} + 14 x - 15$

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