alleryStandard form of a quadratic equation is
Aax^2 + bx + c = 0 with a not 0
Bax + b = 0 with a not 0 only
Cax^3 + bx + c = 0 of degree three
Dax^2 + bx + c = a non-zero number
Answer & Solution
Correct answer: A. ax^2 + bx + c = 0 with a not 0
1. A quadratic is a polynomial equation of degree two.
2. Its general form has a, b, c with a not equal to zero.
3. If a = 0 the equation reduces to linear.
4. So the standard form is ax^2 + bx + c = 0.
_Source: Selina Concise Mathematics Class 10, Ch 5 Quadratic Equations (Mistral OCR'd PDF), section on standard form_
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