alleryFor ax² + bx + c = 0 to be a quadratic equation, what condition must hold?
Aa > 0
Ba < 0
Ca = 1
Da ≠ 0
Answer & Solution
Correct answer: D. a ≠ 0
If a = 0 the x² term disappears and the equation becomes linear.
The only requirement is a ≠ 0.
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