Question 530118
Find all real solutions of the given equation: 
(x^2 - x)^2 - 63(x^2-x) - 648 = 0
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Let w = x^2-x
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Your problem:
w^2 - 63w - 648 = 0
Factor:
(w+9)(w-72) = 0
w = -9 or w = 72
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Solve for "w":
If w = -9 you get:
x^2-x = -9
x^2-x+9 = 0
Use the quadratic formula to solve.
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If w = 72
x^2-x  72
x^2-x-72 = 0
Factor:
(x-9)(x+8) - 0
x = 9 or x = -8
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Cheers,
Stan H.
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