Which quadratic equation is equivalent to (x2 – 1)2 – 11(x2 – 1) + 24 = 0? u2 – 11u + 24 = 0
a. where u = (x2 – 1) (u2)2 – 11(u2) + 24
b. where u = (x2 – 1) u2 + 1 – 11u + 24 = 0
c. where u = (x2 – 1) (u2 – 1)2 – 11(u2 – 1) + 24
d. where u = (x2 – 1)