Answer
$-8n^{4}-10n^{3}+18n^{2}$
Work Step by Step
Simplify each product. Write in standard form.
$-2n^{2}(5n-9+4n^{2})$
Use the distributive property
$-10n^{3}+18n^{2}-8n^{4}$
Write in standard form:
$-8n^{4}-10n^{3}+18n^{2}$
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