Answer
$7x^5-14x^3+5x^2-10$
Work Step by Step
I use the FOIL method: $(7x^3+5)(x^2-2)=7x^3\cdot x^2-2\cdot7x^3+5x^2-2\cdot5=7x^5-14x^3+5x^2-10$
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