How do I determine the values of x when f(x) = 48 when f(x) = x^{4} - 5x^{2} + 4. Please and thank you!
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Let , then solve for w, then take square roots to find x values. Some polynomials are "secretly" solvable as quadratics. Here are some other eamples:
complete the square ... assuming you're looking for real roots only ... for all
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