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Can someone show you the steps to finding the real roots of x4-9x2 plus 20?

Updated: 9/21/2023

YunjaeLee ∙

Lvl 1

∙ 12y ago

Best Answer

Replace y = x2, and use the quadratic formula to solve for y. This should give you two solutions for y. Then replace back, and solve each of the solutions for y, to get two solutions each for x.

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