Multiply Polynomials

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Multiply $(3x-4)(8x+5)$

**Answer**

$\;\;\; (3x-4)(8x+5)$

$=3x(8x+5)-4(8x+5)$

$=24x^{2}+15x-32x-20$

$=(24x^{2})+(15x-32x)+(-20)$

$=24x^{2}-17x-20$