\(ax^2 + bx + c = 0\) is a quadratic equation only when
A. \(b \ne 0\)
B. \(c \ne 0\)
C. \(a = 0\)
D. \(a \ne 0\)
A. \(b \ne 0\)
B. \(c \ne 0\)
C. \(a = 0\)
D. \(a \ne 0\)
Best answer
Answer: D. \(a \ne 0\)
If \(a = 0\) the \(x^2\) term vanishes and the equation is no longer of degree 2.
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