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Solve the equation by making an appropriate substitution.x4-40x + 144= 0Make an appropriate substitution and rewrite the equation in quadratic form.Let u = x, then

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Solve the equation by making an appropriate substitution.x4-40x² + 144= 0Make an appropriate substitution and rewrite the equation in quadratic form.Let u = x², then the quadratic equation in u is u²-40u + 144 = 0Select the correct choice below and, if necessary, fill in the answer box to complete your choice.A. The solution set isB. The solution set is 0.

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