Which of the following is NOT a quadratic equation?
A. (x + 2)² = x²
B. x (3x-5) = 2
C. 3x − x² = 4x²
D. (x − 4)(2x + 1) = 0
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Answer:
A is not a quadratic equation.
Step-by-step explanation:
Here, you need to expand the functions and you will find that first one is a linear expression.
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