alleryIn ax^2 + bx + c = 0, why can a not be zero?
AThe equation would become linear
BThe equation would have no solution
CThe value c would vanish
DThe equation would be an identity
Answer & Solution
Correct answer: A. The equation would become linear
1. The x^2 term has coefficient a.
2. If a were zero, the x^2 term would disappear and bx + c = 0 would remain.
3. That is a linear equation, no longer quadratic.
_Source: Wikipedia, Elementary algebra, Quadratic equations_
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