SOLUTION: How do you solve this quadratic like equation: (z^2-8)^2+2(z^2-8)-3=0

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Question 721532: How do you solve this quadratic like equation:
(z^2-8)^2+2(z^2-8)-3=0
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
You are supposed to recognize that this is a quadratic equation in z%5E2-8 and you can make a substitution using any variable you like arbitrarily for z%5E2-8 and solve for this chosen variable first; and THEN solve further for z.

Start by doing something like, let t=z%5E2-8, and first solve for t.