Question Number 125132 by Snail last updated on 09/Dec/20
$${Find}\:{the}\:{number}\:{of}\:{real}\:{roots}\:{of}\:{ax}^{\mathrm{7}} −\mathrm{4}{x}^{\mathrm{4}} +{x}^{\mathrm{2}} +\mathrm{1}=\mathrm{0} \\ $$$${where}\:{a}>\mathrm{2} \\ $$
Find-the-number-of-real-roots-of-ax-7-4x-4-x-2-1-0-where-a-gt-2-