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Question

If ax2+bx+c=0 is a quadratic equation, then “a” CANNOT be:

A
-1
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B
1
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C
π
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Solution

The standard form of any quadratic equation is ax2+bx+c=0, provided a,b,c [coefficients] are real numbers and a≠0 [a is called the leading coefficient]. If a = 0, the equation would become bx + c = 0 which is then a linear equation, but not a quadratic any more. Hence, the leading coefficient, which is a, should never be 0 in a quadratic equation.

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