Answer
$8x^3+2x^2-55x+50$
Work Step by Step
$(4x-5)(2x^2+3x-10)=4x(2x^2)+4x(3x)+4x(-10)-5(2x^2)-5(3x)-5(-10)=8x^3+12x^2-40x-10x^2-15x+50=8x^3+2x^2-55x+50$
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