Question 6 • GA-Advanced Algebra: Concepts and Connections CR
An equation is quadratic in form when its powers can be written as 2, 1, and 0 using a substitution such as u = x³. In choice C, let u = x³; then x⁶ = u², so the equation becomes 7u² + 36u + 5 = 0, which is quadratic. The other choices do not have exponents that fit this pattern.
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