The result of cubing both sides of the equation is x2 – 7 = 2x + 1.This equation is
Answer
A
linear
B
quadratic
C
cubic
Explanation
Move all terms to one side: x² − 7 = 2x + 1 becomes x² − 2x − 8 = 0. The highest power of x is 2, so the equation is quadratic. The correct choice is “quadratic.”
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