Solve the equation by making an appropriate substitution.

Last updated: 7/22/2022

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